Somme women get crazy over their daughters as their daughters approach adulthood.

I'm not sure what it is exactly but your wife may be jealous of your daughters youth and the future she has before her. Yoir wife may have always resented her. Some women are batshit insane in that they simply resent their daughters deep below the surface.

Your wife may also resent your daughter for becoming a woman , a role that only your wife has occupied for a long time in your family. It sounds fucking crazy but it's totally possible and abusing your daughter may be a way for her to still feel like she is alpha or better.

Your situation reminds me of my own and tahts why I've suggested this theory. my dad never stood up for me. You're doing the right thing and your daughter is going to remember it.

Maybe your daughter does need to leave the house and move out. Your wife has created a really ugly situation. She sounds narcissistic and this is not something that gets fixed. Wife is probably at daddy's spinning a whole take about how she's being victimized in her own home.

For any of this to be resolved your wife is actually going to have to assume fault. Narcissists don't do that. So I don't know if this is going to actually heal.

If your daughter were here we'd be telling her to save up and move out for good and cut all contact with your wife.