I get the problems with silence. I talked about it with my T 10+ years after we had had several years of silence problems and she replied, "I wish you had let me know, I would have said something". Of course, at the time, that was my problem, I could not speak, was locked inside my own head, debating my imagination and learning the truth of why I could not beat my way out of a wet paper bag.

I don't know if your T can tell every time she is silent how you feel or, ahead of time if "this" time you will feel a particular way. How long exactly does she have to be silent? I would think all of that could change or be different depending on what else is going on? Maybe you can make a bit of a game of it and try to tally when you feel T is angry with you and when it is "okay" and what the differences are/feel like? Maybe saying out loud, "You're angry at me again, aren't you?" will get a bit of a discussion going and get rid of that feeling? It could be that she only understands after you all have hashed out that particular session and how you responded, not beforehand like she can plan and control you?

My T and I discussed body language once too, and she immediately explained she does not even try to do much with body language, she has enough just understanding speech/the conversation/words.