All this was affording her the keenest satisfaction. Her mother, who had never seen her so genuinely happy and contented, beamed with shy delight over the new pleasure that had come into their lives. For her it was sadly darkened by her son’s violent antagonism to their new friend. They had learned that they must not mention Hugh Gordon’s name to him even in letters, and when he last came to see them, on one of his brief and infrequent visits, they had trembled with anxiety during the whole of his stay lest they might inadvertently approach too near the subject that now loomed so large in the narrow round of their lives and had brought such freshening and broadening of their interests.

They speculated much as to the cause of the animosity between the two men, and it was evident to Mrs. Brand, in all their talk, that her daughter’s sympathies were with Hugh Gordon. For Penelope, deep in her heart, well concealed from her mother, had long harbored a feeling toward her brother that was very near distrust and contempt. Mrs. Brand had found in Hugh Gordon and the affection he plainly longed to give and receive, a young man fashioned so much more after her spirit than was her own son that her mother-heart yearned to enfold him also in its love. It grieved her deeply to know how intense was the bitterness between them.

“If they could only both be my boys, and be good friends,” she said to Penelope, with brimming eyes.

As Penelope opened her letter from Hugh Gordon she gazed with astonishment at the check it contained, a check for a bigger sum than she and her mother had ever possessed.

“Dear Sister Penelope,” she read. “For you didn’t say that I mustn’t call you sister, and so I shall, because you know that is the way I think of you. I am very happy just now thinking how surprised you will be when you see this check. It is some money that I borrowed of Felix last winter when I wanted to start in business. I am now paying it back to you and your mother instead of to him, because I know that he is not taking care of you as he ought, and also because I know that if I pay it to him he will merely make some bad and wasteful use of it. Enclosed you will find a memorandum of the date, the principal, rate, interest and amount. I shall tell him that I have sent it to you.

“I have wanted very much to see you during this last month, for there are many things to talk over with you at more length than is possible by letter. But I knew what a rage it put Felix into when he learned about my being there the last time and how unhappy his anger and violent talk made both of you, and especially your mother, and I didn’t want to subject you to such an experience again.

“But the time is coming soon when I shall be able to visit you as often as you will let me. I am looking forward to that time with such anticipations of happiness as I hardly dare tell you about. If you should decide against me, if you should not feel toward me as I hope you will—but, no, that would not be possible. And so I shall go on thinking of the happy times we shall have when I run over often to see you and when I take both of you upon little trips—to the seashore, to New York, wherever you think you would like to go. For we can make that sort of pleasure possible for you, Penelope, if you want to undertake it.

“It will all be decided and everything explained the next time I see you. But to prepare the way for all that I shall have to tell you, so that you will be ready to listen to it understandingly, I am sending you a book to read in the meantime. You will find in it one of the wonder stories of modern science, and in its light that quick, keen mind of yours will go to the heart of this matter at once. You will see clearly through the essentials of the mystery you have already sensed in the relations between Felix and me. But I hope you will not make up your mind about it until I can explain to you the whole matter, from beginning to end. I think that will be soon, within two or three weeks. In the meantime, you will not hear from me again, for I shall have to go away for a while.”

The rest of the letter was taken up with matters about which they had been conferring for some time. But Penelope was not able to find in them her usual interest, so deep was her absorption in Gordon’s mystifying allusions and promises.