It's true, everything Childermass says is true and Norrell knows it. He is, in truth, horrified by the sight of Nancy -- it makes his delicate sensibilities twitch and curl inwards. Yet Norrell is not without heart, and perhaps if he helps her quickly he might get rid of her quickly too.

"Fetch her some hot water!" he snaps, and waves quickly at Childermass. If they argue much longer he will get a headache. Perhaps if he removes Childermass a moment they will both calm down. Nancy is just a girl, after all, what could she do? "And a cloth! Let her clean herself up a little before you question her."