Hello 3velniai,
I would simply say something to your therapist about the touching thing. I actually find it odd that she did this, as most aren't really very touchy-feely. But I bet if you just say "I know you are trying to be understanding through touch, but it makes me uncomfortable so I'd appreciate it if you didn't do that. Just listen to me and let me know you are listening".
Don't send any more emails. Write down what you are feeling and maybe read it to her in your next session, but don't write anything that you might regret.
If this keeps going on and you still aren't comfortable, get a new T. You have every right to do this if you feel you aren't getting anywhere with her.