The child turned her head as they walked and looked at her. Joan felt herself smarting under that look, but persisted.

“I’m very much run down,” she said. “I may have to go away.”

“You promised to help him,” said the child.

“I can’t if I’m ill,” retorted Joan. “Besides, I am helping him. There are other ways of helping people than by wasting their time talking to them.”

“He wants you,” said the child. “It’s your being there that helps him.”

Joan stopped and turned. “Did he send you?” she asked.

“No,” the child answered. “Mama had a headache this morning, and I slipped out. You’re not keeping your promise.”

Palace Yard, save for a statuesque policeman, was empty.

“How do you know that my being with him helps him?” asked Joan.

“You know things when you love anybody,” explained the child. “You feel them. You will come again, soon?”