"That's the rumor." Dry, quiet, in response to the assertion that he's a wizard - Severus is trying to puzzle it out. The thought definitely occurs to him that the tower itself is containing whatever spell has her in its grip, but the idea of trying to manhandled her all the way down the massive spiraling stairs without the aid of magic, fighting against her involuntary cleaning impulse and whatever else might unleash itself - no, best to try and sort it here.

"Your shoes?" Let's see those, then. Being out, midnight - yes, she was abducted and spelled, but it doesn't offer much in ways of unraveling it. Items appearing on her during the transition might, however.