She gives no sign that she heard the whistle, aside from maybe a slight twitch of her eyebrow. When Nathaniel steps into the light however she holds a hand up, turning to look at him.

"You don't want to put your foot there. Unless you like the idea of being paralyzed from the neck down for the next half hour." She stands from where she's crouched and moves to dispel the trap, only giving him the barest of smiles after she's done undoing her handiwork. "I assume you have a reason for being out here, or are you lost?"