I know that you've said before that you & your T have agreed that when she has an emotional response during her interactions with you, you've both agreed for her to express it-- as a modeling of more real-world reactions & healthy relationships. Perhaps in some ways she's taking this further than is therapeutically useful for you? Like, in the real world, there is a limit to how much some people will reassure you before they don't want to do it anymore. But that doesn't have to be the case with your therapist, and may not be useful for you.

Wishing you luck in getting this worked out. It sounds like you're on the right track.