Holy shit did you make out with a Tumblrina? Jesus, get out before she starts yelling "rape" and "patriarchy". She's overreacting, y'all were drinking. If she tried to kill herself over a kiss she needs some serious help. I'm talkin "Just let the nice men in the white coats take care of you sweet heart! Byeee!" kinda help.
It seems like you left some stuff out and are trying to cast her out as the "mentally unstable" so I won't take sides. But if she said she wanted to be just frinds then you should have respected that. I have told many guys off cause they would take that friendship for granted and still try to feel me up or kiss me etc so I understand where she's coming from.
You're trying to change her feelings and not apologising. Instead of saying "hey, you felt this way and im not owning up to my actions, regardless of what i think of them" try saying "im sorry tou felt that way because of my action"
Were you being forceful out something? I don't understand
It sounds like she is confused an the fact of you and her making out made her even more confused about her sexuality. Two people making out while drinking happens and you both took part in it not just you. But her trying to kill herself is a whole different problem from a kiss. You are both adults i would sit down with some other friends about it but she is exaggerating this. I see her being upset or mad about it but this is too much.