Is this what she meant by "Things don't feel right"?!?

No, after all those changes you have made, if you go back to being her friend you may go back to the same patterns and habits you are trying to break. She was right to leave you, you used her for and made her feel like she was worthless, what you really need to do if you've found God, is go to her and ask for her forgiveness and list what you did wrong to hurt her. Then walk away and don't look back, that part of your life is behind you now.