She was feeling very weak and tired.

And, after a little, she fell asleep, blissfully unconscious of the fact that her husband was seated close to her on the other side of the bed, silent and watchful, and immobile as a statue.
She did not wake till late on the following morning, and then it was to find her sister Mona only in attendance.
"Have you been up all night ?" was Nan's first query.
Mona hesitated.
"Well, not exactly.

I lay down part of the time." "Why in the world didn't you go to bed ?" questioned Nan.
"I couldn't, dear.

Piet was here." "Who ?" said Nan sharply; then, colouring vividly, "All night, Mona?
How could you let him ?" "I couldn't help it!" said Mona.

"He wouldn't go." "What nonsense! He's gone now, I suppose ?" Nan spoke irritably.