She shook her head. "I couldn't sleep until she is better."

A look of gratitude leaped to his eyes, and she became aware, through some subtle wave of perception, that for the first time, she had assumed a definite image in his thoughts.

"Thank you," he answered simply, but his tone was full of suppressed feeling.

While he looked at her the old prejudice, the old suspicion and resentment faded from her face, and she gazed back at him with trusting and friendly eyes. Though she was pale and tired, and there were lines of worry and sleeplessness in her forehead, she appeared to him the incarnation of helpfulness. The spirit of goodness and gentleness shone in her smile, and ennobled her slight womanly figure, which drooped a little in its trim uniform. She looked as if she would fight to the death, would wear herself to a shadow, for any one she loved, or for any cause in which she believed.

"I came to ask you," she said very quietly, "if it would not be better to tell Mrs. Blackburn the truth about Letty?"

He started in amazement. "But she knows, doesn't she?"

"She doesn't know everything. She thinks Letty is better. Miss Webster has been talking to her."

"And you think she ought to be warned?"

Her question had evidently puzzled him.

"I think it is unfair to leave her in ignorance. She does not in the least realize Letty's condition. Mrs. Timberlake tells me she heard her order the car for half-past seven."