Finnick smiles coldly, wondering if this child can tell what's bumped into him. He knows vampires tend to be strong, stronger than fae at any rate, but he's not about to act like he's on his guard with one this small.

"Don't make promises you can't keep," he says sharply, almost at a hiss. He'd turn and walk away, but that's never a wise decision with one of Joss' kind, so he stares him down instead.