Op, I'm gonna be blunt with you but it's not unkindness, I promise!
You've got to move on from this man and that awful situation. You don't need to have conversation with him or any of his family. Your child is 19 so you can completely cut ties, block, disengage. You're sat around being bitter!
He's done what he has done but it's over and you're done with him.
Your life isn't ruined!
Who owns your home? Your car, your bills etc, who pays them? Is it him, or you?
If it's him, it's time to put a stop to that. Go on benefits, whatever, just get out from under his thumb.
If it's you, you are in charge of your own life!
He knows the one thing he has over you is manipulating his daughter to leave you. She's realised this too and when she doesn't get her own way, she's willing to use it!
Don't be so weak that she knows she can use this to manipulate you!!!
If she wants to go, tell her she can go. You still have a life to live OP, and although inside, you're devoted to your daughter (just like I am to mine, no judgement), on the outside you need to stop letting these people manipulate your goodness.
How old are you? What do you do for you?
I'd be telling my daughter that I love her so much but because her dad has caused so much heartache, he's not in my life anymore. She's free to do as she pleases but she always has a home with you. But she's never to use him to hurt you again.
Sorry it's so long but, OP, it's time to be strong. You can't be letting your life be defined by a years old situation caused by a twat of a man. That's all he is - a twat!!
❤️