Heather Locklear's daughter Ava Sambora is 'crushed' by her mother's behavior (Exclusive)

Ava Sambora is worried about her mom, Heather Locklear.

A source tells ET that the 20-year-old actress -- the daughter of Locklear and musician Richie Sambora -- wants her mother to get better after her arrest last month for one count felony domestic violence and three counts misdemeanor battery on a police officer.

"Ava is crushed by her mother’s behavior and feels she will only get help if she takes this incident seriously," the source says. "If everyone protects Heather she will never change."

"Ava has had to watch her mother's ups and downs and this is far worse than it has ever been,” the source adds. “No one should have to deal with their mother behaving the way Heather does. Especially the way Heather has treated the police. Something has to change, there has to be some sort of reality check here."

See photos of Heather Locklear and daughter Ava Sambora together:

19 PHOTOS
Heather Locklear and daughter Ava Sambora together
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Heather Locklear and daughter Ava Sambora together
HOLLYWOOD, CA - APRIL 11: Actresses Heather Locklear and Ava Sambora arrive at the 'Scary Movie V' Los Angeles premiere at ArcLight Cinemas Cinerama Dome on April 11, 2013 in Hollywood, California. (Photo by Jeffrey Mayer/WireImage)
HOLLYWOOD, CA - APRIL 11: Heather Locklear and Ava Sambora arrives at the 'Scary Movie V' - Los Angeles Premiere at ArcLight Cinemas Cinerama Dome on April 11, 2013 in Hollywood, California. (Photo by Steve Granitz/WireImage)
Actress Heather Locklear and daughter, actress Ava Sambora arrives at the premiere of This Is 40 held at Grauman's Chinese Theater in Hollywood. (Photo by Frank Trapper/Corbis via Getty Images)
HOLLYWOOD, CA - DECEMBER 12: Heather Locklear and Ava Sambora arrive at the 'This Is 40' - Los Angeles Premiere at Grauman's Chinese Theatre on December 12, 2012 in Hollywood, California. (Photo by Jeffrey Mayer/WireImage)
Actress Heather Locklear and daughter Ava arrive at the world premiere of 'The Twilight Saga: Breaking Dawn Part 1' held at the Nokia Theater L.A. Live. (Photo by Frank Trapper/Corbis via Getty Images)
LOS ANGELES, CA - NOVEMBER 14: Actress Heather Locklear and daughter Ava Sambora arrive at the Los Angeles Premiere 'The Twilight Saga: Breaking Dawn - Part 1' at Nokia Theatre L.A. Live on November 14, 2011 in Los Angeles, California. (Photo by Barry King/FilmMagic)
Actress Heather Locklear and daughter Ava Sambora arrive at the premiere of 'Justin Bieber: Never Say Never' held at Nokia Theater L.A. Live. (Photo by Frank Trapper/Corbis via Getty Images)
LOS ANGELES, CA - FEBRUARY 8: Heather Locklear and daughter Ava Sambora arrive at the Los Angeles Premiere of 'Justin Bieber: Never Say Never' at the Nokia Theater L.A. Live on February 8, 2011 in Los Angeles, California. (Photo by Gregg DeGuire/FilmMagic)
LOS ANGELES, CA - OCTOBER 17: Ava Sambora and mom Heather Locklear arrive at the White Trash Beautiful Spring 2011 Fashion Show held at Sunset Gower Studios on October 17, 2010 in Los Angeles, California. (Photo by Gregg DeGuire/FilmMagic)
LOS ANGELES, CA - OCTOBER 17: Ava Sambora and mom Heather Locklear arrive at the White Trash Beautiful Spring 2011 Fashion Show held at Sunset Gower Studios on October 17, 2010 in Los Angeles, California. (Photo by Gregg DeGuire/FilmMagic)
LOS ANGELES, CA - MAY 20: Heather Locklear and daughter Ava Elizabeth Sambora arrive at the American Idol Season 8 Finale held at the Nokia Theatre L.A. Live on May 20, 2009 in Los Angeles, California. (Photo by Gregg DeGuire/FilmMagic)
LOS ANGELES, CA - MAY 20: Heather Locklear and daughter Ava Elizabeth Sambora arrive at the American Idol Season 8 Finale held at the Nokia Theatre L.A. Live on May 20, 2009 in Los Angeles, California. (Photo by Gregg DeGuire/FilmMagic)
Heather Locklear, Richie Sambora and daughter Ava Elizabeth (Photo by L. Cohen/WireImage)
HOLLYWOOD, CA. - JANUARY 17: Actress Heather Locklear and daughter Ava arrive to Disney's Premiere of 'Hannah Montana & Miley Cyrus: Best Of Both Worlds' held at the El Capitan Theatre on January 17, 2008 in Hollywood, California. (Photo by Jeffrey Mayer/Wireimage) *** Local caption *** Heather Locklear
HOLLYWOOD, CA. - JANUARY 17: Actress Heather Locklear and daughter Ava arrive to Disney's Premiere of 'Hannah Montana & Miley Cyrus: Best Of Both Worlds' held at the El Capitan Theatre on January 17, 2008 in Hollywood, California. (Photo by Jeffrey Mayer/Wireimage) *** Local caption *** Heather Locklear
(EXCLUSIVE, Premium Rates Apply) Heather Locklear and Ava Sambora (Photo by Ray Mickshaw/WireImage)
Heather Locklear and daughter Ava Elizabeth at the Universal Studios Cinema in Universal City, California (Photo by Lester Cohen/WireImage)
Heather Locklear, Richie Sambora and daughter Ava during Rockin' the Corps Concert - An American Thank You Celebration for US Marines - Arrivals at Camp Pendelton in San Diego, California, United States. (Photo by J.Sciulli/WireImage for PMK/HBH)
Heather Locklear, Richie Sambora and daughter Ava (Photo by John Sciulli/WireImage for PMK/HBH)
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The source also tells ET that after Heather's most recent crisis, her family is rallying around her, claiming, "Her friends constantly worry that Heather’s family will help her out of every difficult situation caused by her alcohol issues and then she won’t get real help."

On Wednesday, a source told ET that Locklear had entered a rehab facility and was "getting the help she finally needs," after battling substance abuse "for years."

"Ava begged her mom to go to rehab," the source said. "After Heather finally agreed, Ava went away with her father to get a break from it all."

Today, the source says that everyone is hoping Locklear sticks with treatment long enough to get clean and change her life for the better.

On Friday, new details emerged from Locklear's arrest last month. According to a search warrant obtained by ET, Locklear alleged that her boyfriend, Chris Heisser, tried to choke and kill her shortly before police arrived to her home on Feb. 25; he denied this in the same warrant and police did not observe any bruising on her neck.

One of the deputies allegedly offered Locklear medical attention, but she refused, stating she was not injured. The warrant alleges that Locklear then told the cops to "get out of my f**king house" before grabbing one of the police officers on the arm and kicking him in the shin.

More photos of Heather Locklear:

18 PHOTOS
Heather Locklear out and about in recent years
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Heather Locklear out and about in recent years
LOS ANGELES, CA - SEPTEMBER 09: Farrah Fawcett Foundation President and CEO, Alana Stewart (L) and Heather Locklear at the Farrah Fawcett Foundation's 'Tex-Mex Fiesta' 2017 at Wallis Annenberg Center for the Performing Arts on September 9, 2017 in Los Angeles, California. (Photo by Charley Gallay/Getty Images for the Farrah Fawcett Foundation)
LOS ANGELES, CA - SEPTEMBER 09: Farrah Fawcett Foundation President and CEO, Alana Stewart (L) and Heather Locklear at the Farrah Fawcett Foundation's 'Tex-Mex Fiesta' 2017 at Wallis Annenberg Center for the Performing Arts on September 9, 2017 in Los Angeles, California. (Photo by Charley Gallay/Getty Images for the Farrah Fawcett Foundation)
BEVERLY HILLS, CA - AUGUST 16: Actress Heather Locklear arrives at the screening of 'Too Close to Home' at The Paley Center for Media on August 16, 2016 in Beverly Hills, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
BEVERLY HILLS- CA - AUGUST 16: In this handout photo provided by Discovery, Actress Heather Locklear attends TLC 'Too Close To Home' Screening at The Paley Center for Media on August 16, 2016 in Beverly Hills, California. (Photo by Amanda Edwards/Discovery via Getty Images)
BEVERLY HILLS, CA - OCTOBER 10: Heather Locklear (2nd from Right) and Dr. Marc Mani (R) and guests attend Victorino Noval birthday celebration at The Vineyard Beverly Hills on October 10, 2015 in Beverly Hills, California. (Photo by Lilly Lawrence/WireImage)
HOLLYWOOD, CA - OCTOBER 24: Actress Heather Locklear attends the opening night of 'Evita' at the Pantages Theatre on October 24, 2013 in Hollywood, California. (Photo by Paul Archuleta/FilmMagic)
HOLLYWOOD, CA - OCTOBER 24: Actress Heather Locklear attends the opening night of 'Evita' at the Pantages Theatre on October 24, 2013 in Hollywood, California. (Photo by Paul Archuleta/FilmMagic)
LAGUNA BEACH, CA - AUGUST 24: Actress Heather Locklear attends the Acura/KOST celebrity benefit concert and pageant on August 24, 2013 in Laguna Beach, California. (Photo by Jerod Harris/WireImage)
BEVERLY HILLS, CA - JULY 24: Actress Heather Locklear attends TNT's 25th anniversary party at The Beverly Hilton Hotel on July 24, 2013 in Beverly Hills, California. (Photo by Jason LaVeris/FilmMagic)
HOLLYWOOD, CA - APRIL 11: Actress Heather Locklear arrives at the 'Scary Movie V' Los Angeles premiere at ArcLight Cinemas Cinerama Dome on April 11, 2013 in Hollywood, California. (Photo by Jeffrey Mayer/WireImage)
HOLLYWOOD, CA - DECEMBER 12: Heather Locklear arrives at the 'This Is 40' - Los Angeles Premiere at Grauman's Chinese Theatre on December 12, 2012 in Hollywood, California. (Photo by Jeffrey Mayer/WireImage)
LOS ANGELES, CA - NOVEMBER 12: Actress Heather Locklear attends the St. John's Health Center's Power Of Pink benefiting The Margie Petersen Breast Center at Sony Studios on November 12, 2012 in Los Angeles, California. (Photo by Frazer Harrison/Getty Images for St. John's Health Center)
Actress Heather Locklear arrives at the world premiere of 'The Twilight Saga: Breaking Dawn Part 1' held at the Nokia Theater L.A. Live. (Photo by Frank Trapper/Corbis via Getty Images)
LOS ANGELES, CA - FEBRUARY 8: Heather Locklear arrives at the Los Angeles Premiere of 'Justin Bieber: Never Say Never' at the Nokia Theater L.A. Live on February 8, 2011 in Los Angeles, California. (Photo by Gregg DeGuire/FilmMagic)
Heather Locklear arrives at 'White Trash Beautiful' by Richie Sambora and Nikki Lund at Sunset Gower Studios on March 19, 2010 in Hollywood, California.
Heather Locklear rrives at Women In Film's 2009 Crystal and Lucy Awards at the Hyatt Regency Century Plaza on June 12, 2009 in Century City, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - MAY 20: Actress Heather Locklear arrives at the American Idol Season 8 Grand Finale held at Nokia Theatre L.A. Live on May 20, 2009 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)
THE TONIGHT SHOW WITH JAY LENO -- Heather Locklear -- Air Date 12/03/2008 -- Episode 3668 -- Pictured: Actress Heather Locklear arrives for an interview on December 3, 2008 (Photo by Paul Drinkwater/NBC/NBCU Photo Bank via Getty Images)
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Once cuffed, officers alleged that Locklear made the following threats, which led them to file the search warrant: "I hope no one f**king burns your entire department down, your f**king police department down, or your homes, or your private homes. Because you come into ours, I'll come into yours. I'll stalk you. You just feel what it's like. Now that I've got your names, watch out. Get the f**k off my property. Don't ever come on it. All of you are not allowed ... I will shoot you if you come on my property and take that as a threat and f**king put another count against me."

During the investigation, Locklear's daughter, Ava, told officers that her mother had been drinking, and the police discovered a .38 Smith & Wesson revolver registered in the 56-year-old actress' name. They did not, however, find a weapon when they searched the home.

Our source says, “Heather’s statements and threats to the police had to be taken very seriously. They had no choice but to go back to the house with a search warrant," adding, “Ava had high hopes of a happy future for her mother, but things just have gotten worse."

ET has reached out to Heisser, as well as representatives for Locklear, including her attorney, for comment.

As previously reported, Locklear was arrested after a domestic violence call was reported at her residence. In an initial investigation, police alleged that she had battered Heisser at the residence prior to their arrival. During the arrest, police said that Locklear allegedly became combative and uncooperative, and allegedly battered three deputies. A spokesperson for the Ventura County Sheriff’s Department told ET at the time that Locklear was transported to a local hospital that night, where she was evaluated prior to being booked into jail. She posted $20,000 bail and was released the following day.

A few hours after Locklear's arrest, Heisser was arrested on a driving under the influence charge in Thousand Oaks, California. He was cited and released shortly after. Locklear's next court appearance is set for March 13 in Ventura, California, while Heisser is scheduled to appear in court for his case on April 26.

21 PHOTOS
Heather Locklear retro photos
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Heather Locklear retro photos
Portrait of American actress Heather Locklear dressed in jeans and a cropped sports jersey, late 1970s. (Photo by Hulton Archive/Getty Images)
DYANSTY - 'Reconciliation' - Airdate December 2, 1981. (Photo by ABC Photo Archives/ABC via Getty Images) HEATHER LOCKLEAR
DYNASTY - 'The Miscarriage' - Airdate December 16, 1981. (Photo by ABC Photo Archives/ABC via Getty Images) HEATHER LOCKLEAR
DYNASTY - Gallery October 1981. (Photo by ABC Photo Archives/ABC via Getty Images) HEATHER LOCKLEAR
T.J. HOOKER - Heather Locklear Gallery - Shoot Date: June 18, 1982. (Photo by ABC Photo Archives/ABC via Getty Images) HEATHER LOCKLEAR
LOS ANGELES - FEBRUARY 2: Actress Heather Locklear poses for a Fashion/portrait Session on February 2, 1981 in Los Angeles, California. (Photo by Harry Langdon/Getty Images)
UNITED STATES - OCTOBER 15: DYNASTY - Cast gallery - Season Two - 10/15/81, John Forsythe (Blake) and the 'Dynasty' women, from left: Linda Evans (Krystle), Pamela Bellwood (Claudia), Heather Locklear (Sammy Jo), Pamela Sue Martin (Fallon) and Joan Collins (Alexis). , (Photo by Bob D'Amico/ABC via Getty Images)
LOS ANGELES - FEBRUARY 2: Actress Heather Locklear poses for a Fashion/portrait Session on February 2, 1981 in Los Angeles, California. (Photo by Harry Langdon/Getty Images)
LOS ANGELES - FEBRUARY 2: Actress Heather Locklear poses for a Fashion/portrait Session on February 2, 1981 in Los Angeles, California. (Photo by Harry Langdon/Getty Images)
LOS ANGELES - FEBRUARY 2: Actress Heather Locklear poses for a Fashion/portrait Session on February 2, 1981 in Los Angeles, California. (Photo by Harry Langdon/Getty Images)
LOS ANGELES - FEBRUARY 2: Actress Heather Locklear poses for a Fashion/portrait Session on February 2, 1981 in Los Angeles, California. (Photo by Harry Langdon/Getty Images)
Heather Locklear and Tom Cruise at the Su Ling Restaurant in Los Angeles, California (Photo by Ron Galella/WireImage)
Heather Locklear & Scott Baio (Photo by Barry King/WireImage)
Heather Locklear and Guest during Raquetball Illustrated 'Player of the Year' Gala at Don the Beachcomber in Los Angeles, California, United States. (Photo by Ron Galella/WireImage)
T.J. HOOKER - Gallery - Shoot Date: June 18, 1982. (Photo by ABC Photo Archives/ABC via Getty Images) HEATHER LOCKLEAR
T.J. HOOKER - Cast Gallery - Shoot Date: June 28, 1982. (Photo by ABC Photo Archives/ABC via Getty Images) ADRIAN ZMED;WILLIAM SHATNER;RICHARD HERD;HEATHER LOCKLEAR
'Battle of the Network Stars' - 10/1/82 on the ABC Television Network competition 'Battle of the Network Stars'. (Photo by ABC via Getty Images) talent: HEATHER LOCKLEAR photographer: ABC credit: ABC source: American Broadcasting Companies, Inc. cap writer: JD
Heather Locklear during Party Celebrating 200th Episode of 'Melrose Place' at Garden of Eden in Hollywood, California, United States. (Photo by Ron Galella/WireImage)
Heather Locklear (Photo by SGranitz/WireImage)
Actress Heather Locklear who appeared in Dynasty 1986. Later in TJ Hooker, Melrose Place, and Spin City.
Lead actors of the television show Melrose Place. From (L-R): Laura Leighton, Heather Locklear and Andrew Shue. (Photo by Deborah Feingold/Corbis via Getty Images)
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Reporting by Adriane Schwartz

RELATED CONTENT:

Heather Locklear's Arrest: New Details Emerge on What Allegedly Happened With Boyfriend Chris Heisser

Heather Locklear in Rehab Following Arrest and Longtime Battle With Substance Abuse, Source Says (Exclusive)

Police Raid Heather Locklear's Home on Gun Search After Her Previous Alleged Threat to Shoot Deputies

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