I agree with landskaperdan. If you're in this situation again and you can tell this to your therapist. Preface the statement 1st by saying, you don't have active intentions. They tell people to be honest and then you end up feeling like you shouldn't have shared - that's not right.

Be assertive and say, these aren't active thoughts at all. She should know the difference - its not like you're saying you want to die now. Maybe if people could discuss this openly, it might save some people or at least give them the opportunity to share instead of shoving it in the closet of shame. Let her know these aren't active thoughts so she doesn't have to react extremely.