Damn that sad af, really sorry to hear 'bout it. I hope the situation will change for ya at some point down the road.
I spend a lot of time anymore worrying about the possibility of my kids being weaponized or turnt against me. I'm certainly ain't been stupid all along, I was always aware my wife had been laying the groundwork to do such a thing in subtle ways for years mostly with her daughter from a past marriage. I don't think my lil girl's opinion could ever be swayed tho, she is like a hardline, 1%'er, ride or die daddy's girl lol, unfortunately I think that's why momma seems to dislike her.
Hope someday you get that relationship with your kid back. I couldn't imagine losin my kiddos in any kinda way. I feel for ya.