"I must start by the early train to-morrow," she said, "and try to catch the Flying Scotchman. A little friend of mine in London is very ill."

It had proved to be a begging-letter indeed, but not of the kind she had supposed. It came from Lucy's father, Mr Reynolds.

"The doctor says that Lucy is in no actual danger," he wrote, "but she adds that her temperature must not go any higher. The child is fretting so for you that I am afraid this alone is enough to increase the fever. She was not very well when she left us to return to London a week ago; but our country doctor assured me there was no reason to keep her at home. Of course, Lucy had sent for a woman doctor before I arrived; and cordially as I approve her choice, a moment like this seems to call one's old prejudices, with other morbid growths, to life. Dr Alice Bateson seems very capable and is most attentive, but I need not deny that it would be a great relief to me to have you here. Lucy's mother is too much of an invalid to travel so far, and you have been like an elder sister to her for years.

"I know well that I need not apologise for the trouble to which I am putting you. I fully expect my little girl to improve from the moment she hears that I have written."

Mona read this aloud, adding, "I will go out and telegraph to him at once."

"Well, I'm sure," said Rachel, "it's a deal of trouble to take for a mere acquaintance—not even a blood relation."

"Lucy is more than a mere acquaintance," said Mona, with a quiver in her voice. "She has been, as he says, a little sister."

"What does he say is the matter?"

"Rheumatic fever."

"Then," said Rachel bitterly, "I suppose I may send your boxes after you?"