I'd find it the opposite. Dealing with the intensity of abuse history, SI, body dysmorphia, etc I think it would be unethical for my T to NOT provide out of session contact. How would it be ethical for her to stir all this up and then leave me high and dry for days with no assistance? That would be extremely upsetting and not productive. Of course there are risks but I can't imagine doing this work with someone unless i could count on them to be there