Hi, and welcome to the forum!
I'm sorry your therapist is doing this. It seems really inappropriate, especially considering that she's a trauma therapist. She should realize that not all clients want to be touched, let alone hugged. I would try one more time to discuss it with her, to say you don't want to hug at the end of each session (and if there is a time when you want one, you'll initiate it). If you struggle to say it out loud, you could write or type it out and either hand it to her or email/text it (if she allows that). If she won't listen, makes you feel guilty, etc., then I'm sorry, but I think you need to find a new therapist.