My best friend is ignoring me.?

Well it's all start 1 year ago since we don't talk.At first I and my bff didn't want to see each other,but with the time the things calm down.I call her just to start a talk.I ask to go out and things like that.I wish her birthday and she say thanks.Then I find out that she has to go to an operation and I feel really sad about her althought the things between us wasn't so good I went to visit her.We talk on phone,we laught like everything is ok.Then when she go out of the hospital I try to call her to ask her how she is felling,but she ignore my call.It was very strange,because the days before we talked.One day I met her on the street and asked her why she ignores me,and she told me that she apriciate that I am good with her,that I call her,but she don't want to be my friend with me.Two days later our friend(he is a boy) who is her and mine friend,ask her to talk with me,but she didn't want.She told him to tell me not calling her anymore,because she don't want to be my friend anymore,she don't want to see my face,she didn't tolerate me anymore.Also she said it to my cousin and she told him that I am a good girl,but she don't want to be my friend again.I don't know why she is acting like this because we talked and everything was fine..please help..