Just a little update. I did email new T and told her what exactly I was thinking/feeling during the session when I got quiet. I told her I felt like I was underwater and paralyzed. I figured it would be helpful for her to know since she doesn't know me very well yet and is not a mind-reader.
I did not expect a response, but she did reply. Her reply was short, but showed a lot of warmth and appreciation for having shared with her.