As she fought a Qatari prince for the custody of their three children, a forty-five-year-old former princess of Qatar was found dead in her Marbella home. During the custody battle, she accused her ex-husband of inappropriately touching – molesting – at least one of their children. Now, former Qatari princess Kasia Gallanio is dead after an apparent drug overdose. She had been married to 73-year-old billionaire Abdelaziz bin Khalifa Al Thani, who is the uncle of the current Emir of Qatar.

Thani is the eldest son of Qatar’s former Emir Khalifa bin Hamad Al Thani. He currently serves as a finance minister. However, Kasia claimed that her ex-husband sexually molested one of their three daughters, although he claims the opposite, denying that he did anything of the sort.

Gallanio said last month: “We had some bad news last week which I was absolutely devastated about. It was alleged in court that her father had touched her inappropriately, which is going to go into an investigation.”

After making these claims against her ex-husband, the former Qatari prince was found dead at her home in Spain. She was known for being a socialite who partied hard and would spend time with celebrities. Notably, she attended the wedding of Sofia Vergara to Joe Manganiello in 2015. The cause of Kasia’s death was an apparent drug overdose after her body was found on Sunday morning.

When Spanish police arrived at the scene, they found Kasia’s body in her bed with no sign of physical assault or violence. Her youngest daughter had been trying to contact her mother from Paris for days and alerted Spanish authorities that she was not responding.

The doorman allowed Spanish officers to search Kasia’s home and found her dead in bed in the Marbella apartment complex around 8 am on Sunday.

In an interview with Women’s World, Kasia explained her side of things after being married to a Qatari prince.

“Two of my daughters are twins. They wanted to live with me, so he cut contact with them as a punishment. It’s very sad because children need both parents. The little one is not allowed to talk to me, which makes me extremely sad because she gets a lot of material things from her father, so it’s almost like manipulation and blackmail. It’s like a part of my body is missing.”

Kasia grew up in Los Angeles. She was of Polish ancestry. She met Abdelaziz when she was just nineteen years old and married the Qatari man in 2004.

After her death, a friend spoke to Olive Press, describing the former Qatari princess as a “good person” who was “against drugs” and was most certainly not an alcoholic.

“I knew her very, very well and am devastated at the news,” Louis Spagnuolo told the publication for Ex-Pats in Spain. “She was a very good person, and those who knew her loved her. She loved her daughters beyond belief and would never leave them. She was dead against drugs and was never an alcoholic.”