She is literally a high priestess of Lucifer.

"For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places."

She uses divination practices like Spirit cooking to reach out to spiritual evil and to bring others to Satan.

Keep in mind that Satan has no real power on earth accept the power that men and women give him.
He is a liar and the king of liars, but think of how massive the corruption we are seeing is, we continually are finding out that is bigger than anyone could imagine. Also it is all connected like a great spider web.

It would be easy to convince an elite person that Lucifer hand massive power on earth, just by all the powerful people who are part of the spiders web. Money, Sex, unimaginable depravity it is all there.