yeah, she's probably still having issues with her ex, a lot of the time that happens where you still think about them or have to take time to get over them. It's hard to move right on. One thing to be careful with here is being the rebound guy. I had something like this happen to me and it turned out and backfired on me later. Just keep your guard up. For now i'd take it slow with her and see what she wants. Pushing her will only cause her more dislike to you. If she knows how you feel, keep doing things to reinforce that, like hang out with her and do things for her, and then when she decides she is ready, she can go to you if thats what she wants.