The sound of someone eeling their way up the stairs toward him while trying not to make noise is clearly audible in the echoing silence of the Great Hall. It doesn't help that she clangs a little bit on the stairs. Maybe she should have gotten a curtain of her own to muffle the noise...

Before she manages to do whatever it is she's trying to do, the light falls just right for her to pick out his silhouette, and she sits back abruptly. She could have sworn...

"Werren't you glowing beforre?"