'ow observant of you! [by which she means she doesn't feel the need to justify the discrepancy. she probably wouldn't under any circumstances, but at the moment she mostly just doesn't see any need to tell him that she found what appears to be a bulletproof vest of no making she can identify--but in exactly her size--waiting for her at her desk. by this point, she's really starting to wonder what in the world is making the Plane so generous today]

I take it your arm's recovered? [she offers him a hand] Anyway, I'm ready if you are. I'm on a side street, so you shouldn't be making too much of an entrance. [thoughtfully, she adds:] What sort of equipment are you gonna need to contact your planet, anyway? I might be able to call in a favour--since you'll owe me one anyway.

[she thinks nothing of how odd this might sound. after all, for her it's a constant relief to be able to talk openly about her alien contacts with people from the Plane. but of course, if Narvin was only assuming that she'd met the Doctor, he might be in for a surprise]