And, at the same time, Roxie grabs the spider-thing from under the bed she's stashed it, twists, and hurls it like a shotput at the face of the demon... thing.

It's already scrabbling and spitting by the time it's in the air, and the fraction of a moment of travel is enough for it to full congeal into a white-shelled crab-spider-thing the size of a cat, full of teeth and claws and legs, and very very upset.