When I was in therapy for my CSA issues, my therapist never asked for details of the abuse. In fact told me it wasn't necessary to hash out the details in order to heal and recover.
Personally, I don't think asking your therapist for greater consideration is something you should need to do. Please, find someone else who is more sensitive to your needs and qualified in the treatment of SA. You deserve better!
"It's never too late to be what you might have been."
"You cannot find peace by avoiding life."