After what she did,should I let this girl come to me if she wants to talk?

This is one of those things where your just going to have to bite the bullet and flat out ask her "whats the deal? Do you like me or not? Am i wasting my time?" tell her to just let you know how she's feeling about it. If shes not into you then hey move on that's just a lesson learned for you, she may be acting shy as well you may bring that out in her because she really likes you and doesn't know how to approach you, but 7 months is a long time for her to be acting strange like that did this come all of a sudden? or has she been acting like this for awhile? if shes been acting like this for awhile then just move on, if its all of a sudden then just ask her maybe she found someone else...good luck!