"Nyeheheheheheheh, PERFECT," Peridot agrees, bobbing her head unsteadily in agreement. "AND... And we could flood the jail with lights, so Childermass couldn't do that shadowy... thing that he does. It would be BRILLIANT! Foolproof!"

She has no idea why Strange thinks she would use her powers to create a large jail of all things, but you know what? She's just going to roll with it.