Don't even worry about demonstrating changes. That's about her behavior. Make the changes for you. Personally there is such a desire to prove we're different it's hard not to show them off and seem pursuing and controlling. For that reason I almost try to minimize/hide my changes. That way I know I am doing hem for me. And if they are real, permanent, and consistent, it will come across in ways you'd never know about. That would be more convincing anyway than making a show of it.
Me:38 XW:38 T:11 years M:8 years Kids: S14, D11, D7 BD/Move out day: 6/17/14, D final Dec 15