It's got nothing to do with that I don't think.
IMO, she got too much success ad fame too young, since she was roughly 12 years old she was in the spotlight, wherever she went, people followed her, she couldn't go out without 30 people with camera's trailing her, they constantly documented her high's and low's, her relationships, her family, her everything! She wanted mroe control over her career and her label weren't keen on that so gave her little bits to keep her going, but in the end she got overwhelmed by it all, she couldn't handle it anymore, the being lonely, not knowing who to trust, so she (maybe) turned to drugs, alcohol etc to escape, which in turn could have caused her brekdown and given her several possible disorders, depression, bipolar, multiple personality etc, her family saved her and got her under the conservatorship.