Most Helpful Girl
I'd give her time for sure. Whether it is over for good is up to her. Maybe after several months, write her a letter saying what you have been working on, you are very sorry and you hope she can forgive you. Tell her that you feel that you were wrong with how you acted. Either mail it to her house or give it to a trusted mutual friend to give to her, or as an even better idea, send it to her with a bunch of flowers but after that do not pursue it any more.