I would start as if she was a new BP to you. Setup her habitat, go to a smaller enclosure , make sure there are plenty of hides, setup temps properly, etc.

If the damage was done in 7 months, it might take a while to re-acclimate the snake, I wouldn't expect a sudden change. Just do your best , and in the long run I would hope she turns back around. After all, at least you know she was a more "tame" snake before, it is feasible to think that she can be again.

best of luck!