I've never had my therapist not believe anything I've told her. She has questioned my perception of events, and asked for clarification of events, but never doubted that what I'm sharing is how I perceived something. I think that's the important thing, though...it is how I perceived an event. I think for a theraputic relationship to be effective, there must be trust on both sides, otherwise, it just doesn't work.

Your post is very hypothetical, though, so I find myself wondering if this is something you've shared and didn't understand the T's reaction, or if it's something you're thinking about sharing and are afraid of what the reaction might be. If it is something you already shared, and you felt that your T was disbelieving, then I would suggest asking your T to clarify. Check your perceptions against reality by asking. Mind reading is an easy trap to fall in to, especially about things you are particularly sensitve about. If it's something you're still just thinking about sharing, then you have to trust your relationship with your T, and trust that they will believe you.