I have told 2 t's so far about some csa I hadn't really remembered till last year, and both have been pretty good about it. Most recent T is concerned (not the right word, but I can't think of one that fits better at the moment... caring?) but lets me take it at my own pace. She allows herself to be upset about it when I don't allow that for myself, but she kinda holds a safe place while doing so. Previous T was specifically an sa t, so that was our focus. she was more even about disclosures and pushed a bit more, but also was ok going at my pace.
My disclosures happen first on paper, then I read them to t (there's something healing in finally saying it out loud for me, and having a safe person hear it)...