Well, do you like her? It sort of seems that way, seeing as you didn't like this other guy, even thought he was "normal". But I may have got the wrong end of the stick!
I think you need to show her that you care and value her friendship - be friendly and try and make it up to her. Apologise and be sincere, which will probably come naturally seeing as you cared enough about her to post it up here, you obviously want to make amends . Just try not to make the same mistakes in future, and let her know that you just want her to be happy and to be friends again.