As noted elsewhere, she is her mother’s daughter. Eventually it comes out.
Bank on it.
Scrape away the name status etc and she and he are no different than any other couple.
He could be a-hole of the week but it matters not when compared to the maturing of the daughter of “she whose name cannot be mentioned”.
[tongue in cheek, of course...]
I wish them the best.
Hopefully the sins of the parents will not darken their home.