I haven't had anything nearly this intense happen with a therapist, but I want to say that I think it's brave and awesome that you're trying again. I saw a "new" backup T on Wednesday, and it was startling how easy it was to open up to her now that I am a veteran client. I was crying or almost-crying for most of the session with this total stranger, and I felt oddly comfortable with it. So it might be easier than you think, especially if this new T is a good fit for you.

It seems unlikely that this T is going to want to pin the blame on you for what happened with your former T. Blame doesn't seem like a terribly useful construct in healing painful things like what happened to you. But since you know going in that assigning blame won't be useful, you can use that as criteria to screen her out if she goes there and won't respond to your attempts to re-direct. Therapists can be wrong too, as you have so painfully learned.

Best of luck to you! I hope you can get this all sorted out and start feeling better soon.