I don't think really "controling" as a ruler would. More pushing them in a certain direction. And watching the chaos unfold.
As I mentioned, a real life Sims game.
But, as far as her magic powers go, we can only speculate. Yes, I do believe she is a high level demon, but her powers do have a limit. Is she a succubus? Succubi traditionaly have sex with men. Or more precisely they appear in their dreams. Or at least during the night when they are asleep. It's incubi that have sex with woman. There is even a theory that they are the same being. As a succubus she takes the semen of a man (and his energy) and as an incubus gives the semen to a woman.
So propably
just a high level demon.
I think the
extent of her powers is the question here. Is it a magical sphere of influence, that surrounds her, maybe even engulfs the entire city? Or does she have to influence individual people? Which would be impractical and isn't fully in line with what is observed by Katherine and others. So, is her influence like radiation? That it lingers around a place and given a longer time period she could irradiate the entire city as she moves around. The other question is then, is it a "constant effect spell" that surrounds her like an aura or just when she actively casts spells that some of the magic sticks around. Like radiation.
Atomic demon, sequel to Atomic blonde.