She doesn't want you in her life, but she needs you? Sounds like you are just going to be filling a void.
I had not read your initial post until after I read this most recent one, but after reading your initial post, I had to delete what I was originally going to write on here. Look, I put my heart and soul into my relationship, and wound up in the same situation, just as you did. She didn't appreciate the things that you did for her, and she wasn't willing to put forth the time and effort in the relationship, because she was so busy. I got the same bs, and the thing is, it's really like "Tal" commented, that she didn't have time for you, so who the hell is she? Basically, now she wants you to have time for her because it is convenient for her? Now it is your turn to do things on your time. Realize, that much of what I am writing her is based on the knowledge that has been offered to me from the other people on this site. I have to say that if I was in your situation, I would probably be on here writing too... but the thing is, it would only take a few comments on here to tell me that the girl screwed you over before, and didn't want to make you a priority in her life, so what makes you think that won't happen again? Unfortunately, I can't really advise you what to do, but these are things to consider... I am actually curious as to what the other people will tell you to do, and will be keeping up with this post. So, these are just my thoughts.