Your friend isn't out there 'hating on you'. She is feeling bad about herself because of this part of herself she knows to be true but probably doesn't like any better than anyone else does AND she knows you saw it. You've done what you could to make amends and now your job is to allow the grief to exist until it runs it's course (that is always the part I don't like.) If you need support in this process, then maybe some counseling would be helpful.

One thing that helps me is the idea of 'praying for your enemies.' When I do that regularly with a relationship I am struggling with, it really does help. Because I've usually at a point where I am feeling negative, I pray to see the good in someone and always works. I think it can even mend relationships that seemed permanently broken.