He was evidently in a stinging mood.
She drew back quickly.

"I would rather go straight up to Lady Carfax if I may." "Oh, I say, don't!" thrust in Bertie with a quick frown.

"Lucas, you'll stay, won't you, and have tea with us here ?" "That is my intention," said Lucas, "if Miss Waring will give us the pleasure of her company." And Dot, though she longed to escape, went forward with him into the glow of the firelight.
She hoped earnestly that Nap would depart, but for some reason Nap was minded to remain.

He settled his brother on the cushions and then flung himself into a chair on the other side of the fire.

Dot was aware without looking at him that he had her under observation; she felt the scrutiny she could not see, and knew it was malevolent.
Bertie evidently knew it too, for he was scowling savagely in a fashion quite unfamiliar to her.