I would say it’s the attention paid to her brother. Since he became a star soccer player, she receives less attention than before and, to her credit, she is using her time in his shadow to recognize and hone her artistic talents and skills. She is becoming more focused and plans what artistic and musical endeavors she wants to learn and try next. Before, she was a busy bee, always chatting and flitting from one thing to another, never thinking beyond the moment. That has changed.
Soccer has also made her brother more focused and determined, also. And, he seems to be setting a good example for her to follow.
And, of course, age is a factor. There is only a certain amount of control a 10-year-old has over her time and activities. But, she is beginning make better choices about the time she does have at her disposal.