You're from the depths of hell! You can provide heat!

You don't want to kill her obviously... there would be investigations, and that could lead to evidence of paranormal activities. You're only here for a week of fun mischief, and the only rule is to not get caught! (See all the way back to chapter 1 of this huge story!)

All of this gave you an idea, which is why you trapped Amy in the freezer. Normally, you would never be able to reveal yourself - especially in your true form. But Amy was alone in the freezer where no camera could ever record, and her seeing you could be attributed to hallucinations caused by hypothermia.

You appear in front of Amy in all your glory, and the heat radiating from your body instantly warms her.

Amy's eyes flutter open. "W-who are you?" she asks.