She does

Using all her expertise, the demon managed to make Erik cum, barely on time.

"Not bad." said Erik, patting her head mockingly, before exiting the room.

He headed to his laboratory, humming to himself. Meanwhile, the demon stayed in her room, plotting her ****.

That evening, he returned to see her, finding her laying on her staring at the ceiling.

"What do you want?" the demon said annoyed as she heard him come in.

"I wanted to see how you were doing." he answered sarcastically. "Is there anything you need, my honored guest?"

"Fuck. You." Irina told him, slowly.

"What about I fuck you instead?"

"Finally!" exclaimed the demon. "At least I'll have some fun."

Not wanting her hands to wander where they shouldn't, Erik chained her arms. He got on top of her, then briefly pondered his options: would it be better to make it as fast as possible to make sure she didn't enjoy it, or rather to make her enjoy it as much as possible? Perhaps making the whole experience as degrading as possible for her would be the easier option, but there was an undeniable allure to the idea of making her slowly come to love her new role.