I doubt you were hanging around because you're scared to go back downstairs by yourself.

[or maybe he was? they'd both be liars if either claimed that the clammy feelings of apprehension had completely deserted their company after the little snack interlude. it wasn't just a natural inclination to rush that kept Vincent's pace so brisk. even without his companion's footfalls adding to the clamor, his heavy boots made it sound as if a horde of elephants were clattering down the stairs.

if he were in a worse mood the obvious implications of Kit's words might've been enough to rile him up into a more heated argument. but he's taken the edge off his monstrous appetite and knows that his supposed uselessness reflect even more poorly on the boy who'd wasted so much time trying to pull information out of him, and so he takes it in relative stride.]

Or maybe you're just worried you'll trip and fall, seeing as you're so blind.

['relative' being the operative word here.]