how have you kept the scars from her seeing them???

if you keep hiding it, she will find out.. Talk to her and if she is your best freind she will understadn.. I know mine freaked out on me, but she also said call me no matter what it took a few days, then she relized I was reaching out to her, cause I did not like what I was doing, and I was scared.. to be doing this..

it is scary no matter if we have support or not..
Try talking to her like say in thrid preson point of view, to see if she would say if it was a mutal friend .. That might work..

That way you could test the waters to see if she flips out or not? just a suggestoin ok.