I've nothing against a merging of the stories concepts.

secondly, i can see how you would see the Dolcett stuff as somewhat misogynistic, persoanly, i find that aspect of it an interesting spice to the fetish of it, a hyper-extreamized world setting where even the women themselves are fetishisticly and suicidaly misogynistic in the persuit of pleasure or "for the greater good" as they have been indoctrinated to accept the unbalanced order. the un-reality of it being what makes it hot for me.

Honestly though i've always been realy bad at coming up with names for characters, and while i am aware its your bread and butter, i've never had much of a taste for useing famous characters or existing IP's for story seeds... so i'm sadly not much help there.

as for the mother being included in sex and it being glossed over as vanilla, i had never realy intened to have the mother be fucked at all, vanilla or otherwise, the scene focusing more on the snuffing and play with the younger girls.

as for how to dispose of the daughter herslef, while her friends hang... perhaps simply chokeing her with bare hands, or cock down the throat suffocation, or a bloodier aproach, useing a knife to gut her or carve off her head.