"Why wouldn't it be? I bring fear. I am fear." Though not necessarily in Paradisa, he's realized. People felt fear here before he came, and they'll feel fear if he leaves. It's weird, and it contributes to the feeling of powerlessness that he feels here sometimes, but he also gets something in return: more believe than he's had in centuries.

"And I'm not interested in a fight. I don't fight humans." He's done it, of course-- when those kids back home had decided to with the Guardians, he hadn't backed down from attacking. But for the most part, he considers humans in a completely different domain from himself. There's no reason to fight them. They aren't worth it. They aren't threats.

... But this girl clearly has some sort of power.

"Are you human?" he asks. Because if she's not-- or if she's from a place where humans can be powerful enough to go toe-to-toe with spirits-- he'll need to be more careful. He's perfectly willing to get into fights when he thinks he has a chance of winning, but he doesn't particularly like antagonizing beings that are more powerful than him (he already leaves Will and the demons alone). He hopes he won't have to add Dairine to that list-- her fears are interesting, and she annoys him enough that, even if she isn't a mere child, he bristles at the idea of backing down to her-- but ultimately, he knows he'd prefer it to setting himself up for an unavoidable ass-kicking.