show her how much you have changed and that you are having fun. If you are doing something that may interest her, there is no harm in inviting her to come along. If she says yes, then treat her as a roommate with no expectations. If she says no, accept the answer and go ahead do whatever you have planned to do. It will be her loss, not yours.
This is how I almost always ask my lady out.
Example: "Would you like to join me Friday night. I am going to see live music at the new local night club"
She is free to join me for a good time. If she says no, I am still going to have a good time without her.
