Pocket money

I want to share a story with you which about saved pocket money and then lost all of them. When I was in elementary school, my parents did provide me a regular supply of pocket money. I always spent them wisely and I could always fill up my piggy bank. I remember I was eager to buy a remote-controlled model car. But my parents refused to buy me that model car and the reasons were that I already had enough toys, which wouldn't all go into the closet. In this case, I made up my mind to buy the model car by my pocket money. So I saved my money for almost half a year and I finally was able to buy it. It was Friday, my parents promised me to go shopping after school, so I carried all of my pocket money that could afford the model car. In the afternoon, I had a PE class, so I asked my friend who was ill and didn't have to attend this class to help me keep an eye on my schoolbag which contained my pocket money. However, after the PE class I realized all my pocket money was gone. And my friend told me she had no idea about that. I cried a lot and couldn't do anything. I asked her to make amends to me for losing my money, as I told her before that my pocket money was in the schoolbag. But she refused to do that and I argued with her. Finally, she compensated me for about 20 yuan and five comics books. I felt miserable about that for nearly a whole year.