This game surely have style, Light to medium femdom at the moment, and I'm sure the further relationships with mistress Will go, the heavier it will be.
At the moment there is no reason to reject mistresses cause it's to early to choose "The One"
Exp, money, skills are not used also (not finished this update yet, maybe I'm wrong)
Bellatrix is my Favourite at the moment, direct and honest, I'd say kind and protective (in some strange way) but not sure we can say that 'bout any of female characters here))
But if someone is still hoping for lovey-dovey alpha relations or some big status in coven society... Nah, I don' t think so, Favourite slave/pet/cattle at best.