BIG x-Friend problems?

I had a friend named Muriel. We were good friends. then we started getting in stupid little fights a LOT. when Muriel got home-schooled i said she would like my teacher. Muriel took it totally the wronge way. we were getting in big fights that would last 2-4 days! I finally said " we get in fights too much, it's not a healthy friendship. i don't think we can be friends." she been telling all my friends that i called her things that i didn't and saying i rewined our friend ship. I can't talk to her because she moved away. i don't know what to do. My friends are all mad at me because of her. I need some help. My friends won't belive me because muriel says, "i sware to god i'm not lieing" What do i do?