Fuck her of course!

"What is your name?" I asked her.

"Oh! I'm Charlie Morningstar."

"Well Charlie, I'm afraid that you are going to have to suck my dick."

"WHAT!?" She yelled, shocked. "WHY!?"

"Because I summoned you. It's normal to fuck demons you summon." I say, like I'm explaining something simple.

"Oh..." She says, downtrodden. "But my girlfriend-"

"Won't mind. Its just a fact of life that Demons get fucked when they get summoned."

"Okay," She says, mostly to herself. And then she says it again, with more energy behind it. "Okay!"

She almost throws herself at me. Charlie slid smoothly to her knees and bites the metal zipper with lunatic pace. In moments, she has... choked herself on your dick, and is now choking on the floor. Apparently this naive demon doesn't know how to deepthroat? Lets fix that...