Bobbi Kristina Brown was reportedly abusing drugs before she was found unresponsive in a bathtub.
The 21-year-old daughter of Whitney Houston and Bobby Brown is rumoured to have been using heroin, cocaine, and Xanax in the past few months, reported People magazine.
Bobbi also allegedly has drinking problem. A source says she had been "in and out" of rehab since her mother passed away.
Despite attempts at recovery, her addiction got worse as she was "distraught" over the third anniversary of the singer's death.
"How thin she had gotten is an indicator. This girl was trying hard, but she didn't have any support system. She was still dealing with a lot of grief over her mother," the source said.
Bobbi Kristina Brown is still fighting for her life in hospital since the bathtub incident. Latest report suggested she underwent a tracheotomy after her breathing tube was removed.
