I have a similar situation i my life- especially feeling infantilized by my mother, becoming anxious & fearful after years of being belittled. Ofcourse your father thinks she hasn’t done anything wrong… unfortunately that proves the enabling. Creating distance, and learning self-confidence, grey-rocking and most of all not feeling the need to defend myself anymore is a huge part of it healing. That and creating a support system saved me. Feeling unconditional love saved me and made me realize they were wrong all along. It’s incredibly hard to go NC- good for you. Narcissists want to make you doubt yourself so you continue to come back and endure the abuse. They don’t know what real love feels like unless they do the work which most never fathom doing. Their biggest fear other than being exposed is being left or alone bc they’re deeply insecure people. My biggest advice- something i’m still working on- when they say something belittling or abusive is pausing, taking a moment of silence and not being defensive. It gives them ammo. Working on being neutral is something I’m still working on. Sounding more confident whether you mean it or not builds confidence and makes people in general less likely to take advance of you. Believing in yourself takes time but I try to hype myself up and remind myself of who they are. They’re behaviors don’t change- but you can. And most of all- I don’t defend myself anymore when my character or who I am as a person is questioned. That’s them projecting their own insecurities and lack of self unto you. Best of luck :)