First of all this is an extremely serious thing to post and I really hope you're not serious about this. This may sound harsh and I don't mean it to but I also hope you realise that there are people on this forum who have been through something like this or who know somebody who has been and to post something like that, its a horrible thing to post, but I also think you need help and this is possibly your way of reaching out for help.
Second thing I'm going to say what everyone else has said. Please get yourself help, like I said, I genuinely believe you need it and that you need to talk to someone. As I said before in the thread where you felt you weren't fitting in here, depression is a horrible thing to go through, while I haven't gone through it myself, I know people who have, two of them being very close to me, one of them is still going through it and its the hardest thing to watch her feel the way she does when she's at her lowest, so I know why you might feel so alone. I have a feeling you're someone who feels things quite deeply and is very sensitive to things people might say.
I ask you to reconsider if you haven't done it or if someone has got to you in time, not just for yourself but the people around you who care about you, I don't think you realise just how much it'll hurt them too because it does and it's them who have to pick up the pieces and try to move on without you. I'm not saying this to guilt trip you in any way I'm saying this to try and make you realise exactly how much you would be missed and how hard life without you would be for the people who love you and I do believe you have that.
This is also gonna sound corny, but you know, you're still very young, you're only a little younger than myself and have a life to look forward to, things are going to get better but you need to give it time, think about later in life when you meet someone you love, have a family, meet new friends, its going to get better, again corny but true.
Its been said before on here but people do like you and people here are concerned, particularly now about your well being. I know I don't know you well but I like your posts and what you have to say for yourself a lot of the time, that in turn makes me like you as a person here and I believe its the same for a lot of people on the forum, the support you got in your not fitting in thread proved that, so to see you feel this down is upsetting. I really hope you haven't gone through with this and I really hope you're alright.
Please let us know that you are at least ok and once you're better please come back and talk with us, whether in a thread to vent off steam or in PMs no one here wants you to feel this way, at the moment I think the best thing for you to do is take time out from here and concentrate on yourself.
On another note about this has anyone here been able to contact her or find out if she is alright?