I'm... afraid I'm not familiar with any dusk-related anything, really. Magic-sealing things I'm certainly familiar with, but...

[ She chews her bottom lip for a moment. ]

The only permanently magic altering substance I can think of is the Wagandea's Pollen, but that's... no, I'm doubtful, because we still have other magic. A witch afflicted by Wagandea's Pollen can, at worst, never use magic ever again. But whatever powers they've supposedly given us still work, so it can't be that. There must be some spell here sealing it, or this place is probably off a Ley Line... I don't know.

Without my wand, I... I'm afraid I can't tell.