I just really need help

Long story short she told me and my friend that she was dating my ex friend "Mick" and then later when I didn't reply cause I didn't know what to say to that. She said she was joking about dating him and he knew she was joking and when I asked him he said that he dated her as a joke but they never agreed to date as a joke together so she lied about that and she just kinda was insulting me and telling my friends I was talking bad about them and when my friend told her what she was doing was wrong (friend) she got mad and told me that she was sorry that I was mad... And yesterday she texted me to stop dragging it and I told her that I didn't to anything she was just insulting me and the last thing she said was, "I think its time you repent" so yeah that basically it. She blocked me on every account ever and posted on her *** note, "blocked, rip to our streak pet tho" idk I just feel like my heart is heavy and I'm back in the same whole I was in before and there is nothing I can do now. We have many classes together but she just doesn't care anymore at all about me saying things like it's ok we aren't friends but idk why it's so easy for her to say that. I wish I could go back in time and now idk what to do at all I just want to clear my head and make everything ho back to the way it was. Sorry for your time.