Write her off. I have a nephew like that. I don’t communicate with him anymore. My advice to him (and your niece) “Piss Off. Someday you will know what I’m talking about, and by then, it’ll be too late. Start sleeping in the bed you made. When someone (or your children) asks 20 years from now “WHO PUT US IN THIS MESS?”, you can raise your hand and say I DID, because sure as shoot’n, God willing, I’ll be there to tell your kids “YOUR MOM DID””
The response? (already, an acknowledgment of guilt)
“YOU WOULDN’T DARE!”
heheheh
(Oh yeah, I would)
bwa ha ha ha. I like you kid.