I like Echoes' solution. Whether your T said it or not, you reacted to something you thought she said, and it bothers you. I would think a good T would let you discuss what that means to you. If it is something very derogatory that would make or break your therapeutic relationship, then I would consider whether this is the right T for you. But I think it's important to know if she believes what she didn't say, or not. Assuming she didn't say it, or even if she did. Or is it that she may be "covering up" a lie what is bothering you?