What do I do?

go see her or call her immediately.. give her a shoulder to cry on, dont judge her and tell her that what shes doing is wrong... support her and tell her how much you care about her.... this can save her life

tell her family and/or authorities

The best thing you can do is talk to her. Tell a counsler if you want to but if you don't feel comfortable with that, then the best thing you can do is be there for her for as long as she needs it.

It wont be an easy road, but a road that you must take. There will be bumbs, and times that you want to give up, but don't. She needs you now...DON'T turn your back on her!

tell her parents.. a psychiatrist might help

when people are depressed or feeling down and want to die...they dont have to have the cops called or their parents called.....most of the time they just need someone to talk to....someone to be there with them and help them through....it might not help and it might not change the way they feel....but its worth a try and if it doesn't work after awhile, then tell someone....but not right away....it only cause things to be exaggerated and people to over react...in my opinion anyways...

oh, and dont smack her or anything like that.....that may sound funny....but my friends would slap me and threaten to not be my friend anymore if i cut....well that didn't really help me at all...it just made me feel even worse, so don't do that....

don't call the police or her family..it deffinatly wouldnt help anything. Tell Sarah you love her and that she has alot of people that care about her. . .if she doesnt want to listen then there's nothing else you can do. I don't know exactly what's been happening lately...but i do know that Sarahs been depressed lately and that she obviously trusts you alot because she's told you all of it. . .and i know that you care about her alot too because everytime she does something you're always really upset. . .so just try to talk to her and don't tell anyone about it because that will probably just make her want to die even more and she'll feel like she has no one she can trust anymore. . .

good luck