Would you forgive this girl?

so this girl I barely knew and I started talking, she was posting stuff on instagram about cutting and suicide, I told her to kik me, she gave me her whole life story and I gave her mine, and it ended for that day. me and her best friend became friends a while back and we both liked the same guy, she got asked out by him, I was hurt inside but I ignored it, after all, she was a friend. the next day I got a kik from the depressed girl saying not to make fun of our mutual friend, which I didn't, I asked her what I supposedly said and she said I said she was anorexic and in the way of me and the boy, I didn't, so I said so and we fought, every time I asked who started that she would just say, idk a friend, which I believe meant she started it.

I still tried to be her friend, we fought a lot that week, she told me I was the reason she cut and I called her a fat ugly b*tich, I never, the next day I kept getting weird looks and a few people called me a b*tch and asked why I would do that to her, our mutual friend had a surprise party that I wasn't invited to, I could understand under the circumstances, at the Time my bff was angry with me and it was pretty much a hatefest about me, all my secrets ended up getting out, including a few I tried to hide from myself. a few days later, the depressed girl threatened suicide on instagram, I told he not to do it and called her bff who eventually talked he out of it. she skipped the next day of school, I went to the counselor and told him I had a feeling bad rumors were going to break out. her parents came and she blamed me for the rumors, I started cutting, but then stopped, a few days late me and my best friend 2 was hanging out and I got a text from her insulting me and telling me my best friend told my secret, I set them up and told them eventually she was sitting next to me, they didn't talk to me for days, me and the mutual friend made up, but me and the depressed girl didn't. a month later when things were starting