What should I do?

Kris & I were best friends for over 6 years. Over the past 2 years we haven't been as close, just because of school, I guess. Just recently we got in a pretty bad disagreement. Her mom keeps pictures of my boyfriend on her desk at her work(no pics of me), visits him at work(has never visited me), and brings him lunch! Kris and my boyfriend aren't even close friends. So I told Kris that I think her mom has a thing for my boyfriend, kind of in a joking way. Her mom finds out and freaks out on me. Anyways, her mom totally turned Kris against me because Kris brought up all of this other crap that happened years ago that has nothing to do with this particular situation, called me a b*tch, and said that she was over me a long time ago. Yeah, I've done some bad things in our friendship, but she hasn't been the perfect friend either! Kris isn't talking to me, deleted her Myspace and made a new one, all because of this. I really want to confront her but at the same time I don't...