After reading your fuller story, since my first post in this thread, I see the limitations of my first set of throughts. I know think your therapist has some boundary issues, has great compassion for you, seems to be on your side, and made a poor choice of words (e.g. perpetrator ).
I do believe that defending your life is different that being a perpetrator. You are not a perpetrator; you are a person who is developing the courage to have and state boundaries. Additionally, you are exercising great wisdom in knowing, that even though you are right, it may be advantageous to strategize, in some situations. Not saying or doing something, that could aggravate a person into physical violence, is smart, is self-defense and non-violence, at its best. Congratations!
Rather than saying that you are not a perpetrator, I'd say you are a person with courage, intelligence, and good self-defense strategies.
I have let such a person perpetrating person 'think' they were right, while I made an exit plan. This is intelligence, not victimization. A therapist once told me, "There are a lot of unpredictable people out there, try not to aggravate them; when you speak your truth, make sure you will be safe."