She has the right to give you her professional opinion. You have the right to reject it and redirect your work into something else. However, if you want to work on understanding your obsessions you mentioned in other threads such understanding might not be possible to achieve without exploring the possibility that you were sexually abused.

That said, I am neither supporting nor judging your therapist for what she suggested. I can't form my opinion because the appropriateness of the suggestion depends on how it was offered, what words she used and what the general message was. I know from experience (both personal and professional) that all cases containing any possibility of sexual abuse are extremely sensitive and delicate and that it's impossible and often inappropriate in most cases to jump to any conclusions about what happened and whether T was right or wrong based on hearsay. All I can say from your info is that she can state her opinion and you can decide if you want to go in that direction or not and inform her about it.