Truly sad. I loved that movie and thought she was excellent as the pretty girl who was nicer than people understood her to be.
Sad that her parents, when queried, were like, "Yeah, I think she was sick or something and had sleep apnea." Thanks mom and dad. Maybe you try - "She had a difficult life, but she was a great talent and gave people a lot of joy." Something like that.
Here was the guess not too long ago on what happened to her (including an interesting reason for losing custody):
Hope she is somewhere riding that lawnmower with her boyfriend's hat