I feel for her family and loved ones. As a parent, one of the worst things imaginable is your child dying before you do.
I am not a fan and don't have any of her music, although I did think she had a good voice.
Addiction is a terrible burden - and some people are more prone than others. Apparently she had given up the illegal drugs some time ago, but as is so common in these cases it was probably the legal intoxicant alcohol that killed her.
If you are drinking 2...