She has indeed moved. She's on the opposite wall of the hallway, pressed up against it and hunched over. She was moving until she catches Sirius's eyes on her. The worry that had creased her face melted away under a smile as she realizes she's been seen. She stares up at Sirius as if daring him to try and catch her. If Daryl wouldn't give chase maybe someone else would and she could make Daryl jealous enough to do so! Perfect logic.

Daryl squinted at Sirius, trying to hide his amusement, "Yeah, well, she's a fucking squirrel. Bet you've had your share of chasing those little fuc- assho- brats... and getting no where."