A fairytale

Last night I had a dream, and I think it would actually make a pretty good kid's book.

Here goes:

Once upon a time, a poor man and his wife lived in a small cottage. They had 3 children, and to live, the man needed to sell objects from door to door. So every week he would leave and come back only a week later, with enough money to live for the next week.
In the land, a beautiful queen had a very expensive piece of jewlery, a rare diamond, but one day, while swimming in the lake, she lost it.
Now the poor man was walking along the path near the lake, and saw something shining. He turned around and picked it up. He immediately knew his wife would love it, but had no idea how valuable it really was. So he went back home and put it in a box so that he wouldn't be robbed while travelling. He would give it to her on their wedding anniversary in a month, he decided.
At the first house where he went to sell his goods, the man invited him inside to eat dinner, and at the table they discussed all the lastest news. That's when he discovered that the queen would give a gigantic reward to whomever would return her jewlery. The man kept quiet about having found it and decided that he would bring it to the queen as soon as he came home the next week.
Meanwhile, the wife decided to clean out the house, and found the box, as well as the jewlery. She immediately understood that he would probably give it to her for her anniversary, but since he wasn't home, decided to wear it until he came back so that she could enjoy it anyway.
The man was so excited about being able to finally live with his wife every day, once he received the reward, that he decided to come home a day early and see her sooner. This took her by surprise, and so she hid the diamond so that he wouldn't know she'd found it, and decided to put it back in the box only after he had left.
The man, upon finding the box empty, assumed it had been stolen and went searching for the thief throughout all the land. He vowed to not come home until he had found it. A month later, he caught one thief, but he didn't have the diamond. So the years passed, he caught many thieves and murderers, and became a quite famous hero, with a mysterious identity. He never forgot his wife but didn't dare go home after all this time with nothing to show for it. So his children grew up, the wife wore black because she assumed her husband had died, she mourned him, and so she wore the diamond every single day in memory of him.
After twenty years, old and grey, he was too tiered to continue his search, and so he went home. He found his wife, in tears, weeping over the diamond. He said her name and took her hand, explained where he was, what he was doing, and then saw it. She told him: "why didn't you come home? I missed you so much; I don't need all of the nice things you wanted to get me, i need YOU".