I definitely have some sort of trauma or PTSD from my SE therapist. It's changed how I relate, charged my fears and causes me still to have flashbacks (to related material, not her) and avoid a number of things. Sometimes all the emotions from the things that happened come up and leave me anxious and insomnia ridden for days.
Ts make mistakes and deal with very raw and vulnerable material and people - they will trigger and cause hurt as part of the process (and being human) and our reactions are how they are...