I'm also having this issue. I adore my T. but she and my husband said it seems I don't feel safe in therapy but not sure how to change it except to keep experiencing it not changing.
I can't even pinpoint why I have a hard time talking. I'm usually most upset the night of my session and the next day. About a month ago, I started writing her letters when I'm upset tears and all. I started reading them to her in my session. I'm probably distancing myself from them when I read them but she's at least hearing my feelings. Yesterday she asked if I've noticed anything about the letters. She said they've gotten longer and more in depth. However, I still toss them to the side after I read them instead of going through them with her. I guess that's the next step.
Maybe try that?