blue - you say you wonder if another T would believe.... My T says that the only thing that really matters is how I perceive or experience the situation. It doesn't really matter if (for example), I was abused or not. My feelings are what we deal with. The past is over. All we've got is the version I carry with me. That's the work.
So, about believing... it shouldn't matter and I don't think you have to prove anything one way or another.
-RT