The best thing you can do is give her space and time. And take this time to work on yourself and GAL. Let her see the new you.
And don't worry, she will see the new you. She may not say anything at first because she will be unsure of your changes. So be consistent.
My walked out 7 months ago and said that he did not love me anymore. And now, we are working on piecing back together. He saw my changes and told me that he liked what he saw, but did not trust me. I asked for him to take that leap of faith with me. And he is. So far, so good.
When he was around me, I tried to act upbeat and fun. It is hard but what choice do you have. He also noticed my GAL and started to question me about it. Curiosity. And that's when he started coming back to me.
