The author discusses the clinical and ethical issues in enactments that are interwoven between relational therapy and supervision as described in the case illustration. The tendency to focus on enactments involving physical action risks obscuring attention to psychological boundary crossings that can be equally harmful. The current maternal tilt in psychoanalysis can unwittingly lead analysts and supervisors to avoid confrontation and analysis of hostility and aggression, thereby inhibiting the working through of intense negative transference and countertransference. The similarities and differences between supervision and treatment are discussed in terms of maintaining responsible boundaries.