I need help! its tearing our friendship apart. (long story)?

I know how you feel, you need to talk to her calmly without calling her names, or swearing, nothing mean. You need to appologize, I know she should and you have no reason to, but it's what she wants and it'll calm her down and ask her nicely if she could say sorry too, unless she says sorry on her own. If you say sorry and sort things out, she won't say bad things about you.