Hi Brian..
I dont understand.. You are in a relationship or not? Is it open? I dont understand much your post..
But i guess the main question is "can """""afc"""" damage be undone?"
Notice the many " in afc.. Cause you need to stop using that word

..
When she meet you, she like you.. even though you were 'afc'.. Now, you are no longer afc? Well, you are still the same person as you was before. You just have improved alot.. In the lines of jelousy and being alpha, taking control ect.. But you are still you...
And so, the girl will still love you, like when you were afc.. But she will love you even more cause she can see you have improved alot.. You are no longer jelous over stupid stuff, you decide what resturant to go to.. You make the decisions ect..
IF it's like that.. Good for you!!
It's actually better to have been afc, then to never have been afc..
Also, this girl is still with you right? So what damage have you done?
OR has she left you? In that case, unless it was really special and really something..
If she didnt want you as AFC, she dont deserve you as ALPHA..