I’ve been a qualified Supervisor of counsellors for 25 years. I trained at Cambridge university and am trained to supervise in an integrative way.
I believe that the whole person comes into supervision. It is important to be able to talk about anything with your supervisor and to feel safe to do so. In other words to be transparent and hold your client in a way that they feel free to discuss ANY feelings they have in the work without fear of judgement.
I wrote my supervisors dissertation on sexual transference and countertransference.