I don't read blogs in general...so I'll go with what the others who have read yours say....

Can you ask for a new T? DBT isn't denegrating, it is confrontational, imo. I personally haven't had experience with it, but from all I read, it isn't invalidating, "just" intense.

But putting that aside, if you feel totally invalidated, what kind of progress can you make? You need to know that it's ok to have the feelings you have, but maybe need to make behavior changes so you won't suffer with those feelings?

TC of yourself. Let us know what you think, and what you decide.