Domestic Violence is about power and control caused of the DV Perpetrator/Aggressor towards the survivor. DV perpetrators use a myriad of tactics to control the relationship with the "victim": financial, physical, emotional, children, and sex.
While the "victim" does bear some responsibility, it's usually with regards to how they are unable (or unwilling) to end a relationship with a DV perpetrator.
You're being reductive about my explanation about the role a survivor plays in a DV relationship.
Recognizing, understanding, and ultimately forgiving yourself for why a person was in a DV relationship is part of the process survivors go through in order to move past it.
It may well be. I looked it up on wikipedia now, assuming you're talking about "Non-agression principle". I'm not sure I understand. Anyway, have a nice day.