In the end, you have to do what YOU have to do what you have to to be happy.
She is out of your control, her feelings and wants are hers. YOUR GOAL is to become someone you haven't been lately. You need to do this consistently and slowly. If she likes what you have done and she senses you are NOT doing this to get her back....she might just comeback.
These changes are for the rest of YOUR life Man, not to get her to notice. Keep doing YOU.