I have a friend problem...?

me and my friend have been besites since we were born. And she is mad at me cause she thinks i'm pretending to be sick so i don't have to hang out with her (but i have actually been swooping in and out of being sick). I recently made a facebook status that was an apology to her, it was very truthful and... heartful too, ( i know i over did it a little ) so she sees it and comments saying "How do i know you aren't doing the same thing you were doing before, LYING!!" and i say "i'm just trying to apologise.... you don't have to accept my apology if you don't want to" Then SHE posts a really long status about people are bullying HER!!! and i'm trying to stay out of it but she keeps chatting to me and posting stuff i just want to tell her to get over herself but i don't want to be mean!