"But I cannot let you stay up all night," she began.
"You said it had been desolate," he answered. "Won't it be less desolate to know that—that some one is near you?"
"Oh, yes! Oh, yes!" she said. "But"—
"Go upstairs," he said, "and promise me that, if she still sleeps, you will lie down and let your nurse watch her."
The gentle authority of his manner seemed to impress her curiously. She hesitated as if she scarcely understood it.
"I—don't—know," she faltered.
"You will be better for it to-morrow," he persisted, "and so will she."
"I never did such a thing before," she said, slowly.
"I shall be beneath the open window," he said, "and I have the ears of an Indian. I shall know if she stirs."
She drew a soft, troubled breath.