Your wording is what bothers me. You asked how can you make her realize you have changed? You can't make her do/see/realize anything. Like you said, actions are what shows change. However, it's really easy to change for a week. She might not want to stick around long enough to see if the change is real. And again, there isn't anything you can do about that.

PityPatyof1 - I don't know where you came up with anything about cheating or whatever? How is wanting space disrespectful? If he cares about her then yes, he feels like he is losing something.