It is an interesting and exciting idea, Tongalee. We know very little about what the brain is capable of, and what you suggest should be possible. Just because it sounds scary and impossible to your T doesn't mean that it it is impossible. After all, many memories from a very long time ago may as well be fabrications, we remember many things that never happened but the memories can still hurt us, so why not reverse that coin? Look into the techniques suggested by other people in this thread.

I'm sorry your T is not supportive. I'm sure it has to do with her own outlook on things.