"I can't blame any one but myself because I don't know all about Joan." Rebecca Mary was an honest little thing and she made no attempt to shift the blame to any one else. She packed it all on her own slim shoulders. "If I had been a good teacher according to my principal I should have called at the house long ago and heard the whole story from Mrs. Muldoon. But I didn't. I kept putting it off, and so I don't know much."

Granny had stopped at the Lincoln school at the close of the afternoon session to inquire if Rebecca Mary had learned anything more about Joan's father. But Rebecca Mary hadn't learned a thing. Joan was an odd mixture of frankness and reserve. There were times when Rebecca Mary thought that she must have been forbidden to speak of her old life in the town with the German name. The whole situation was puzzling. Rebecca Mary could not understand it at all.

If you imagine that Joan's company was a constant joy to Rebecca Mary you imagine all wrong. Rebecca Mary liked to have Joan with her well enough at times, but there were other times when she was perfectly indifferent to her guest and still other times when Joan was almost an irritation, and Rebecca Mary could not see why of all the teachers in the Lincoln school she should be the one to have to borrow a child whether she wanted one or not. She had not had a chance to say "Yes, thank you."

"I've learned that Frederick Befort is on the factory pay-roll and as Frederick Befort," Granny said slowly. "There is no record of any Count Ernach de Befort. Of course now that the war is over I don't suppose it matters if he is a German. There wouldn't be any secrets for him to learn. Germany wouldn't be interested now in what is being done at the factory."

"But de Befort sounds French," objected Rebecca Mary, who could not see that Joan bore any resemblance to any German child she had ever taught. "Joan was born in Yokohama but that doesn't tell us anything. She certainly isn't a Japanese. It's funny but she doesn't seem to want to tell me what country she did come from. I was stupid enough to lose her nativity card, and when I made out another and asked her what nationality her father was she said he was going to be an American. I told her I wanted to know what he was now and she said he had told her that they would forget what they were before they came to this country. That seemed rather queer. But Joan talks of Paris as much as she does of Berlin. I wish I spoke French half as well as she does."

"She speaks very good German, too. And as you say there is something suspicious in the way she avoids any reference to her nationality. It does seem as if she had been told not to speak of it. I suppose I am a silly prejudiced old woman, but I should rather have Joan and her father almost anything but German. Are you through? Don't you want to take a spin down the River Road before you go home? It's perfect out, a real June day. Do come with me."

Rebecca Mary had no trouble at all to say "Yes, thank you" to that invitation. She called Joan, and they went with Granny to the limousine which was waiting at the curb.

"I wonder if Cinderella's coach went as fast as this?" Joan said as they flew toward the River Road. "We read about Cinderella this very day," she explained to Granny. "It would be more interesting to have rats than engines, wouldn't it? I'd like a pair of glass slippers, too, even if they would break so easy. Wooden ones would be the strongest. That's what they wear at home, you know, wooden ones."

"In Germany, you mean?" asked Granny quickly.

Joan wriggled. "Yes, in Germany they wear wooden ones," she said as quickly, "I've never seen glass slippers, not in London nor Paris nor Vienna nor anywhere. Aren't they any place but in fairy land?" she twisted around to ask.

"Nowhere. No matter how much money you have you can't buy Cinderella's slippers anywhere but in fairy land," Rebecca Mary told her with a sigh as if she, too, would like to find glass slippers somewhere else.

For a while Joan was silent, meditating perhaps on the shoe shops in fairy land with their glass slippers of every size and color.

Granny and Rebecca Mary were silent, also, but they were not thinking of glass slippers as the car swung into the River Road, which is quite the prettiest drive about Waloo. Never before had Rebecca Mary driven over it in a smart limousine with a liveried chauffeur at the wheel. She had walked there times without number, but walking is not like riding in a pneumatic-tired machine, and Rebecca Mary did enjoy the change. She was afraid that there was the making of a snob in her for she did like to ride with Mrs. Peter Simmons better than she liked to walk with a teacher as shabby as she had been. Yes, she was a perfect snob. She laughed as if she found it funny to be a snob. Joan looked up and laughed, too.

"I like you best when you laugh." She squeezed Rebecca Mary's fingers. "Of course I like you always, days and nights and every minute, but when you let your face break into little holes," she reached up and touched Rebecca Mary's one dimple, "why I just love you!"

"So do I," said Granny. "And it makes my old face break into little holes, too. Dear me, that makes it very serious, doesn't it? It is our own fault when people frown at us. Don't ever forget that, Joan. If you smile at people they will smile at you."

"Will they? But I like to have people frown at me sometimes. It makes me shiver all down my back. Don't you like to have your back shiver?"

"My back is too old to like to shiver. It's far too old and too stiff."

Rebecca Mary caught the note of sadness in Granny's voice and ventured to touch her hand. "It's the heart not the back which should be young," she said softly. "I read that somewhere so it must be true. And your heart, dear Mrs. Simmons, will never in the world be old. Gracious, I should say it wouldn't!" she added emphatically as she remembered how far from old Granny's enthusiasm was.

"Don't call me Mrs. Simmons," begged Granny, and she took Rebecca Mary's hand in hers. "I'm Granny to all of my young friends. I'd like to be Granny to you."

Rebecca Mary caught her breath. Just imagine calling Mrs. Peter Simmons,—Mrs. Peter Simmons of Waloo—, Granny!

"I'm not going to let my heart grow old either," exclaimed Joan before Rebecca Mary could tell Mrs. Simmons how glad she would be to call her Granny. "I want to keep it young for ever. But how can I when it gets older every year? To-day my heart's eight and next May it will be nine! How can I keep it young for ever?" Joan's voice was a wail.

"Yes, Miss Wyman, how can we keep our hearts young when there is always a birthday before us?"

"You know. No one can give a better rule than you can."

But Granny shook her head. She declared that there wasn't any rule, that was why there were so many old hearts. People didn't know how to keep their hearts young. They weren't taught in any school she knew of.

"I'll ask daddy," promised Joan. "I expect he'll know. I'll ask him just as soon as I see him. But I hope he won't come for me before the golden wedding." She turned pale at the mere thought of missing a golden wedding.

"The golden wedding won't be until July," Granny told her. "Imagine any one being married in July. It was the most scorching day. I thought I should melt and that old Peter Simmons would melt and there wouldn't be any one left to be married. We went to New York and the sea shore on our wedding trip, and Peter ate too many lobsters and was ill. Such times as we had!" She smiled at their memory. "The twenty-second of July," she said dreamily. "Will you keep Joan until then, Miss Wyman? Oh, I have a plan! This is the last week of school, isn't it?"

Rebecca Mary nodded to the last question before she answered the first. "I'll take Joan down home with me, to Mifflin, if Mrs. Muldoon doesn't come back."

"No, I want you both to come to me. Please," as Rebecca Mary looked at her in surprise. "I'm so lonely in that big house by myself. Mr. Simmons is away so much, I never know when he will be home. It would keep my old heart young," she hinted, "to have two young things in the house again. Do, please take pity on a crabbed old woman."

"You're not a crabbed old woman!" Rebecca Mary said fiercely.

"I shall be if you don't come and stay with me. We might motor up to Seven Pines, that's our country place, for a few days. Most people think it's very pretty there. You want to come, don't you, Joan?"

"Yes, I do." Joan did not hesitate a breath. "I want to help you keep your heart young. Don't you want to help too, Miss Wyman?" She didn't see how Miss Wyman could refuse to help.

"But my mother and sister will expect us in Mifflin."

"We can run down Saturday and tell them," suggested Granny. "We can motor down and back in a day. I know your mother will be willing."

But still Rebecca Mary hesitated although it would be fun to go rolling into Mifflin in the big limousine, and it would be fun, too, to stay with Mrs. Simmons in her big house, but—— Her fingers touched her pocket and felt a hard round object, the locket which held the four-leaf clover. The locket reminded Rebecca Mary that she couldn't refuse Granny Simmons' kind invitation if she kept her promise to Cousin Susan. She blushed and stammered a bit as she said "Yes, thank you." And then impulsively she showed Granny the locket and told her what a mystery it contained.

"Well, upon my word!" Granny seemed as surprised and interested as Rebecca Mary could wish. "How romantic! We must find who gave it to you. I do hope it wasn't that fat old waiter who sniffs. Haven't you any clue? Who was in the tea room that afternoon?"

"I was there with daddy, wasn't I, Miss Wyman?" Joan pulled her sleeve. "But I gave you violets. I didn't give you any lucky clover."

"Did you see her father?" Granny asked immediately. She was surprised that Rebecca Mary hadn't told her she had seen Frederick Befort.

Rebecca Mary shook her head. "You can't really say you have seen a man when you have had only a fleeting glimpse of a back. You were there, Mrs. Simmons. And your grandson!" To save her soul Rebecca Mary could not keep the crimson wave from her cheeks when she just the same as put a wish in words.

But Granny shrieked with delight. "If it was Peter!" she chuckled. "If it only was Peter! He is such a matter of fact old boy. I'd love to think he went around giving girls four-leaf clovers."

"Matter of fact!" Rebecca Mary stared at Granny. Peter was anything but matter of fact to her. Her voice told Granny so.

Granny stopped in the very middle of another chuckle. "Perhaps my eyes are as old as my heart," she admitted. "You'll have to come and help me see Peter as you do, help me change my old eyes."

"Can you do that?" Joan wanted to know at once. "Can you change your eyes and your heart if you don't like the ones you have, like Mrs. Muldoon changed the bread one day? She said it was stale."

"Indeed you can change a stale heart, Joan. It is wrong and foolish to keep such a useless thing as a stale heart. You should change it at once."

"Where?"

Granny looked helplessly at Rebecca Mary. Joan's endless questions were sometimes hard to answer. Rebecca Mary laughed and answered for her.

"Wherever there is anything to love," she suggested.