I don't know what to do...

So my old best friend broke things off like a year ago. So during this time of having a 5 year friendship she bullied me. But I just didn't want to admit it. Then she broke things off with me last year. I had 1 year of depression it was terrible and there was no one I could trust. So I texted her a few weeks ago saying... hey I know we aren't really friends anymore but I would like to keep things civil with you. She texts back and says ok. I seriously just wanted to kill her at this point for what she put me through all of these years. So what should I do now???