That one's weird AF. See, theyve said they can't make her a vampire because vampire = undead = necrophilia = Patreon rule problems, so basically she's succubus with all the traits of a vampire. Go figure, although originally you were supposed to have made her castle something like what the wayfort is now, which would explain why all text talks about how poor condition it's in.
She was also supposed to have got an expansion many moons ago, but I guess alongside them deciding "eh, wayforts good enough people love it" they decided to just abandon her. They also said Patreon was why they can't do any incest, but brienneXFamily is awfullll close, and evergreen is sussy af with that, so I guess they're exploiting loopholes intentionally or not. For all the talk of how powerful komari, evergreen and her are, I'd figure they'dve added more stuff for them by now. Evergreens setup to be like flemeth from dragon age, but currently she's just a smut dispenser, komari says many interesting variations of "please kill me I want to die" (with no smut MR TOBS) and Ms not-vampire is... Somewhere.
I always thought evergreend be a pretty big player and you could choose to marry her evil fine ass and do evil shit but who tf knows anymore.
Edit: I just remembered the harem ghost smut scene. That'd be necrophilia, right? Is that a loophole?