I would say she's just trying to make you fell bad about not being friends with her, you know. If she went all the way to unfriend you I wouldn't accept the re friend request cause shes probably looking at what your up to and making herself feel better or something. I mean, we've all stalked someones page just to make ourselves feel better. Don't talk to her because that's what the wants, and just never re accept the friends request is my advice!
People say to hold on tight to what you love-
especially when it's trying to buck you off