I'm a grown adult, and it took me months to really be able to talk to my T. What helped me along though was writing her notes ahead of time. It felt silly, but it was all I could do. Eight months later, my T can't get me to shut-up!

So, maybe you could write your T a note explaining you are currently unable to open up to her verbally, but you do want help. And then write out as much or as little as you want to begin with.

Good luck!!