Helping a severely troubled friend?

A girl that im friends with has recently gone through what can only be described as a horriric, self destructive experience. Despite the fact that she is brilliant, talented and witty (ranked way up in our class), she's also driven by insecurities, jealousy and mental instability. I had no idea until recently that she was on medication for depression. She's also told me once that she had bipolar II disorder. At school she showed no signs of it. Only occasionally did I notice something off about her. Like little slits on her wrists. I never thought it would be this serious...

A while back she went off her meds and started doing drugs. Out of self punishment, she got high during class and was arrested. Later that night she tried to commit suicide and was sent to a psychiatric facility where she was assaulted by a homicidal patient. She has since been sent to an alternative school for the next month or so. EVERYONE in school has been buzzing about it nonstop. It's seems to justify peoples initial hatred of her (since she's very opinionated and can be obnoxious), but I cant bring myself to hate her, despite having every reason to.

We had a very honest talk today when I accused her of being apathetic of her situation and she unleashed all this pent up emotion and told me everything (including her suicide attempt which I was not aware of). She told me that she had wanted to escape it all. And now she's pretty much ruined her life and her chances of getting into an Ivy League college. I understand what she is going through, at least as much as I can, and all I feel is sympathy and sadness... Not anger or hatred. Although she's lost my respect, I feel that when the world has turned against her, she needs some one who will still be her friend. Or else, I fear the alienation may cause a relapse on her part. Perhaps next time she will do more damage

Now, I can only hope she is getting the help she needs. I'm not worried about her being a bad influence on me. I have a pretty level head and would NEVER do drugs or anything poisonous to my body. As for social reputation, I don't care what other people think. As long as I'm doing the morally right thing. What I am worried about is associating myself with some one like her... Some one so unstable and unpredictable.

What do u guys think? I'm really conflicted right now