How can I get my best friend to understand?

dont beat yourself up because of your friend..if she was a true friend,then she would understand..a true friend wouldnt be talking **** about any of der friends like that..thats her problem..not yours..if she accuses you,dnt listen to her..nothing is your fault..you didnt do anything wrong..just move on and ignore her...and i do think that she is a bad influence...you'll have a whole lot of friends...just be yourself and never change the person you are...