She may come around but it's not likely. I am certain you fulfill a need of hers (emotional?) since you've seen her for so long. She has no reason to change the dynamic of the bond since she has what she needs.
It's cold in a way but she's doing the same to you; pull away and work on being self sufficient. Make it clear through your actions that you may not be around all the time for when she would like her need fulfilled. If she wants something out of you, there needs to be commitment on her end.
My guess is one of two things will happen: The relationship will wither and she really didn't care about you to commit, or she will commit. Either is good really compared to be stuck in purgatory.