My mum manages to love my dad still, I think she's scared to lose his attention. She was nasty to me through jealousy but always put a positive denial-fuelled spin on my dad's relationship with me. 'isnt it nice they spend quality time together!', 'isnt it nice they can talk to each other!'. As if that quality time wasn't spent on abuse.
My grandfather inspires a lot of fear in other relatives so they'd rather bicker amongst themselves than drop contact with him or actually think about what he's done.
Some of my aunts encourage the uncles to keep them happy, one of my uncles is too distant to stop the aunt, one of the uncles teams up with the aunt, and the boy cousins are 'strongly recommended' to do stuff to the girls.
But because nobody talks about it, everyone manages to persuade themselves it was only a dream/ a game/ a lie. So it just keeps on going. And these people are so kind and generous and spirited that it's totally at odds with the evil predatory view we have of abusers, so it fuels the ability to deny.
Not to mention the complexity of emotions, your love for someone isn't erased by the disgust. I love my dad so much it hurts. I also hate him and he repulses me. So to be a wife it must get so complicated for the man you love to also be so despicable.
I do feel sorry for non offending paedophiles as no one chooses their orientation, but they do have a choice to act on it- not to mention abusers aren't always paedophiles. Some aren't attracted to children, just power, or want to hurt, or myriad other reasons.