I would first ask your therapist that in discussing things like thoughts of suicide, at what point would she feel she needs to report it and send you to the hospital? And maybe even ask her to give examples of statements regarding suicide that she would feel OK to discuss with no risk of hospitalization and some examples of sentences a person would say where she would definitively call in the authorities?

Obviously, you need to talk about it with all those thoughts. And you need a safe platform to discuss it. It seems the therapist should be that platform, but it's hard to know where a therapist feels obliged to report it.