This sounds like a very difficult situation to be in. Sorry, you are having to experience this. It's very strange that she has just started hugging you after so many years together and not hugging. It's also very strange and completely inappropriate of her as a therapist not to mind a trauma informed therapist to be the one to initiate a hug especially because of your CPTSD and aversion to touch. She should also not be making you feel guilty if you say something. It is perfectly okay to say you are not comfortable with hugs. You do not need to take care of her feelings although I know that can be difficult not to do as someone with CPTSD.