The Sad Ballerina

The heroine of the story is a young girl on her way to become the best ballet dancer in the world and even though that's a good thing, and she should be happy about it, she is not. In fact, the ballerina has been sad for quite a while now and no one knows why or what they can do about it. All this is about to change when she meets someone unexpectedly. This someone is a little boy, younger than she is. He is courageous and happy, even though he is poor and has to take care of his younger brothers.