There's alo of sympathy going to the 'good' parent which frankly I don't share. I used to share, but now I don't. I believe that in some situations it's black and white, no nuance, no grey scale.
That applies to parents and unconditional love. And that applies to parents who don't take a child out of abuse, for their own fucked up, weak, and selfish reasons.
I came from a similiar background i suspect. Had the family dynamic as 'mother' as highly abusive and terrifying woman, who me, my sister and my dad were equally twrrified and in her thrall. Except i was also the family cess pit and universal blame dump, and my sister was the golden one.
I used to hide in the garage with my dad a lot, go join him there after he'd abandoned us to hours of insanity and terror, he'd slope away and leave us to bear the brunt of it. Afterwards I'd hide for hours with him. And my sister would be busy smoothing golden child magic onto hysteric bitch until she allowed us back in the house.
I used to stand up to her when no one else would, 'sacrificing myself' for my father, as I loved him so much and it wasn't fair he was being ripped apart, again, I'd save him by becoming the person she'd go after next.
I used to lie and cheat for my dad all the time. Cover up stuff to avoid the screaming terror of she found out.
Had some very good therapy in my 30s which directly challenged my adolisation of the 'good' parent. He was the only light in years of adject misery snd terror. And it was awful when that went. My walls came crashing down but I feel much more sane having recognized and evaluated the past with true adult eyes.
With adult eyes, what father keeps his children in a highly abusive situation for 18years? We were little children, powerless, and he colluded in keeping us in hell.
What father sneaks their daughter to hospital telling her to be quiet whilst she screamed in agony using her very broken ankle as i 'wasnt allowed' to limp or have help. He sneaked me out after 48hrs as i had been told i wasnt allowed medical treatment as it was inconvenient and had been done to spite her. I always thought that story was about how my dad loved me, but the older i get the more i realise that he was weak and put himself first, then tried to sneakily do loving things in between making me cannon fodder in the war against him.
What father lets his seven year old daughter stand in front of him shouting at her mother trying to protect her daddy from the foul woman?
What father gets daughter to lie and cheat and get him money to fund his bad spending habits? He got jobs further and further away, one year in Scotland so he came home only at weekends... So he escaped as much as possible and didn't care that he left us even more trapped with her, in an isolated village, with a tyrannical maniac,
He is my father and I love him deeply, but he's weak and he's responsible for my abusive childhood as much as if he'd done it all himself.
The irony is, he choose my mum in the end. And she won't even let me be in a room with him as she's so rabidly jealous. When they 'got back together' I lost the only parent I had left. and that hurt more than anything my mother ever did.