I'm pretty sure after the slapping she will try another approach, probably the same thing she did with her mother. Agony & Lust seem the way to go for this protagonist.
IMO the chances are pretty high, that that person behind her is Gaia in the Liliam form and not Liliam. I doubt the priest's control can be broken so easily.
His wife looks like the culmination of the evil merchant trope in drag.
Who's the lover of his mistress? The way this manga is like she should also have another lover, no?