He resisted the urge to tell her that he was a demon and therefore he wasn't every suppose to question the will of something that had control over him, such as hell. Except that Crowley wasn't that kind of demon. He was the kind of demon that did question things. At least the sort of things that involved the end of the world. The matter of being brought to this City seemed to pale in comparison to the apocalypse. Therefore, Crowley didn't much mind being brought here.
Being in the city also meant he was away from other agents of hell. Or rather, agents of hell that he knew of and that knew of him. He hadn't seen anyone he knew, no one was giving him orders and there were no warnings of some huge plot afoot.
No, all Crowley had noticed was this giant monster thing that the City had brought forth. Apparently it wasn't much for self-preservation.
But the girl was going on about auras and how his presence was different and again, he resisted the urge to tell her that she'd hitched a ride with a demon. It wasn't beneficial for her to know, though she probably already had suspicions of such.
"Different," he said slowly, as if trying to figure out what she could mean by such a word. "Everyone is different." Well, it wasn't exactly true. There were bound to be individuals with similarities between them, sometimes extreme levels of similarity.