To recover from a past relationship, there are a lot of help right here on how to use paraliminals on that:
http://www.learningstrategies.com/Paraliminal/Article9.html Also I would suggest stop thinking of her and stop focusing on her. That only will make you think of her, prabably also in other ways to that, than just hate.. The best thing I think, it would be, is to let go of her. If she wants to screw up a lot of her time in her life on you, then let her. I think that it's a sign of that she really has loved you! Else why should she be so angry?? 
You must be worth a lot. Just let the fire go out by itself. just do nothing. Ignore her.. hate has to come out and will pass over time (if you don't put tree into it!).
By the way, why not find a new girlfriend, when you are ready to do that? Somebody this time who has a lot of good qualities. Also these ones which your last one did not have. Or What are your standards? up to you... When you are ready..
Murof.
