A convent

...she wasn't alone. A woman in a nun's habit stood in front of her, a smug grin on her face. She was even rather attractive, in a severe sort of way. Might even be pretty if she smiled instead of smirked. When Krystal tried to step toward her though she felt blocked. Looking down she saw she was in the middle of a pentagram -- the chalk inscription on the floor radiated a power she couldn't overcome. Not a wall, exactly-- more like walking into a wind too strong to push against, though the air was perfectly still. To Kyrstal's demonic senses the lines glowed with power, though her human eyes saw only plain white lines. The double-image was very disorienting.

"Gotcha," the nun said. "Finally, I have proof. The others don't believe demons REALLY exist, but I always knew. I just had to wait for a succubus to try to come to earth. Well, succubus, you're powerless here. There are nothing but women here, you've no men at all to feed from. Submit now and it'll go easier on you. Perhaps you can even be cleansed of this corruption." The nun shrugged. "The Mother Superior will decide what's to be done with you, now that I have proof." She smirked. "Don't go anywhere, now."

The nun turned back. "Oh, and whatever those infernal devices are, toss them out here. "I'll have no tricks from you while I'm gone."