They understood.

An agreeable wave of confidence in his own judgment filled him with benevolence.

He was to lose that confidence strangely in a little while.

It came to him sitting there that he felt much as he had felt in the old care-free past before Brian had deserted, plunging him into abysmal despair.
"Perhaps to-night," Joan said, "you'd better sleep wherever Hannah says.

And then tomorrow you can pick a room for yourself." She slipped away with the grace of an elf.