Damn, that's really cute. Arya's seriously one of Stiles' favorite campers--especially when she catches on quickly like that. He's not too surprised, Arya's a quick learner, and he shares a little smile with Laura.

"Sure did! That thing's beeping is obnoxious, anyway." Laura waves her fingers in Arya's direction and takes a couple steps forward, standing directly in front of Arya and leaning down in front of her.

Stiles leans backwards on his hands, watching the two through careful eyes. Laura's not a malicious ghost, at least not towards him (then again, he'd seen her face in Beacon Hills when he mentioned that Kate Argent was on trial), but it's always good to be careful.