• Megan Thee Stallion's mother Holly Thomas died of a brain tumor in 2019
• The rapper opens up about her loss in her new Prime Video documentary Megan Thee Stallion: In her own words
• Megan says she had to make the difficult decision to pull the plug after her mother was declared brain dead

Megan Thee Stallion has long spoken openly about the pain she suffered following the death of her beloved mother in 2019 – and in her new Prime Video documentary, she reveals that heartbreak even further.

Megan, 29, lost her mother Holly Thomas to a brain tumor in March 2019. In her new film Megan Thee Stallion: In her words (Streaming Now), the star recalls the time Thomas, 47, suffered “back-to-back seizures” and left Megan “in shambles.”

“They had to put her under anesthesia. She was just brain dead,” Megan says in the documentary, which features poignant animation for some sequences, including her mother’s death. “So I stayed up there every day. I spent the night in the hospital. I just prayed that she could recover from this.”

Unfortunately for the “Mamushi” singer, Thomas was unable to recover from her health issues.

“When I realized she wasn't coming back, I was like, 'Damn, I can't keep her like this.' Because I know she wouldn’t have wanted to stay like that,” Megan recalls through tears. “So I had to make the decision to pull the plug and she just passed away the next day.”

Despite her heartbreak, Megan (née Megan Pete) returned to the stage just three weeks later, knowing Thomas wouldn't have wanted her to stay home and feeling sad.

“You know 2019 was really hard for me. I don't want to cancel any of my shows and I didn't want to stop going because that's not what my mom would expect from me,” she says from the stage in a documentary. “She was my biggest fan, despite all the ass shaking and cursing.”

Still, it was difficult for Megan — who lost her father, Joseph Pete Jr., when she was in ninth grade — to move forward without her biggest support.

“When my mom died, I think I really forgot who I was and I lost a lot of confidence,” she says. “I was so used to my mom telling me what to do, and when life started getting crazy, I didn't have her.”

At the documentary's premiere in Los Angeles on Wednesday, October 30, Megan praised Thomas — who also performs as a rapper under the name Holly-Wood — in a special speech.

“Without Holly Thomas, I wouldn’t be the woman I am today,” she told the crowd. “So mom, I love you.”

Megan has spoken proudly of her mother at past events, including when she was honored with the 2021 Award Shine Woman of the Year Award.

“I am truly honored to be in such incredible company,” she said as she accepted her award, tears streaming down her face. “I really want to thank my mother. I want to thank my mother because she taught me to be the woman I am.”

The Grammy winner praised Thomas as her “best friend, my manager” and her “everything” and said, “I know she's proud of me today.” Megan also revealed that it was her mother who motivated her to graduate from Texas Southern University in December 2021 with a degree in Healthcare Administration.

“(My mother and my late great-grandmother) filled me with self-love and determination,” she said. “Thanks to them, I never felt unworthy of my success and my femininity. Through her, I learned to be competitive with myself and that other women don't have to lose for me to win.

Megan Thee Stallion: In her words follows the star's journey “to fame as she stubbornly deals with fame, sadness, pressure and success,” a synopsis says. “The documentary powerfully reveals Megan’s most vulnerable moments and allows fans to get to know the real Megan Pete.”