Heather Locklear‘s daughter is all grown up! 
 
 The 57-year-old Melrose Place star shared a loving video tribute to Instagram on Thursday in honor of her only child Ava Sambora’s 21st birthday. 
 
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 Captioning the post “Happy Birthday Sweet Child of Mine,” Locklear, who is currently seeking long-term treatment in rehab, showcased a series of framed photos of Ava throughout the years. 
 
 “Oh my gosh, I can’t believe my little baby’s birthday is today! Look at the baby, oh my gosh, she’s growing up so quickly,” Locklear said as her cell phone camera panned across the images. 
 
 “I want to say happy birthday to my favorite person in the world. Ava, my princessa, my one and only,” continued Locklear, who lit multiple candles for Ava. 
 
 The actress praised her daughter, who she shares with ex Richie Sambora, as “the kindest, funniest, smartest, most beautiful child in the world and you’ve turned out to be so wonderful — well, you came to me that way. I love you, I want to squeeze you and kiss you and spank you 21 times.” 
 
 To conclude the sweet birthday message, Locklear flipped over two red playing cards: an ace and a queen. “Let’s see, if you went to Vegas, what would you get? Twenty-one, ha!” said Locklear. “Happy birthday, baby.” 
 
 Last month, Locklear celebrated her 57th birthday at the facility she checked into in July to receive long-term treatment for substance abuse and mental health. 
 
 “She’s still there and she’s doing really well,” a source said. 
 
 To celebrate her mother’s birthday, Ava posted a sweet message on Instagram Sept. 25. 
 
 “Happy birthday to my gorgeous mama 💘🎂⚡️” Ava captioned a smiling photo of the pair. 
 
 RELATED: Heather Locklear Reflecting, Praying and Meditating as She Seeks Long-Term Treatment in Rehab 
 
 A source previously told PEOPLE that the actress was scheduled to remain at the facility until September and doctors would reevaluate from there. 
 
 RELATED VIDEO: Heather Locklear Treated for Possible Overdose Hours After Arrest for Attacking an Officer 
 
 Locklear was arrested in June for allegedly attacking a police officer and an EMT who had responded to a disturbance call at her residence. Police told PEOPLE that Locklear was allegedly “extremely intoxicated” and “arguing with friends and family” when they arrived. 
 
 Hours after she was released from police custody, Locklear was hospitalized for a possible overdose. 
 
 In mid-September, she penned a heartfelt tribute after losing a friend to addiction. 
 
 “Addiction is ferocious and will try to take you down,” reads the note. “Recovery is the best revenge. Be kind to everyone you meet, your light just might change their path. Rest in peace beautiful Josh. You touched my [heart].” ||||| Heather Locklear Lawsuit on The Way For Attacking EMT 
 
 Heather Locklear to be Sued by EMT Over Drunken Attack 
 
 EXCLUSIVE 
 
 Heather Locklear is a day away from getting sued by a paramedic who claims she was viciously attacked and injured during a drunken episode that landed the actress in a jail. 
 
 TMZ broke the story ... Locklear went ballistic at her L.A. home back in June after cops showed up after getting a call from a family member saying Heather was heavily intoxicated and out of control. 
 
 When authorities arrived Heather was extremely agitated and allegedly punched a cop who was trying to separate her from her family. EMT's then tried putting her on a gurney and Heather allegedly kicked the paramedic who is about to sue her. 
 
 The paramedic will claim in her lawsuit she suffered head and neck injuries, and it was so bad she was confined to a desk job. The lawsuit, which will be filed by attorney Kevin Flahavan, will also allege Heather verbally abused the EMT. 
 
 Heather was released and was later rushed to the ER for an apparent overdose the same day. She went from the hospital into rehab for substance abuse and mental health issues. 
 
 As for the criminal case ... Heather's been charged with interfering with a law enforcement officer and 2 counts of battery. That case is pending.
– Heather Locklear had a tumultuous June, with an arrest and a hospitalization. She already faced charges of battery and obstructing an officer as a result, and now TMZ reports that a paramedic on the scene will file suit this week. The EMT says the 57-year-old actress deliberately kicked her as the actress was being placed on a gurney, causing head and neck injuries that forced the paramedic onto desk duties. On a better note, Locklear posted an Instagram video from rehab last month, showing photos of her with her now 21-year-old daughter. Locklear checked into the facility in July and is undergoing long-term treatment, per People.