This whole thing sucks.
Yes, the girl made some big mistakes, due largely to what was obviously low self esteem and other kinds of emotional issues, but I just wish she would have asked for serious help from a caring adult before she killed herself.
As for other kids who are being physically bullied and/or hit like this girl was, here's a simple thing that can help them easily: send them to take some boxing lessons. Really.
Knowing how to throw a punch and being willing to do so when it's appropriate is a fairly valuable skill to have. I know that's not politically correct in our overly sensitive society, and I understand there are some other, more complex answers to this problem. I also don't mean kids should beat anyone up who looks at them funny, but I know from my own experience and common sense that when you know how to fight, people generally don't fuck with you (go figure).
While knowing how to physically fight back might not have helped this poor girl, I know it would help A LOT of boys who are being bullied.
Anyways, a sad story all around. Anyone who took part in assaulting this girl, threatening her, or distributing nude pictures of her should be in prison.