Derek snaps back at the scream, his ears oversensitive. It makes him lose focus for a second, allowing her to get away. It's still ringing in his ears when he's back on his feet, body tense but still. He's watching her with glowing red eyes, unphased by her posturing.

He's dealt with meaner, bigger, definitely more terrifying. A kid playing around is nothing. His breath comes in harsh pants, and he really can't deny the grin quirking at the corners of his mouth.

Even if he wants to.