self-assured, competitive, and supportive
You can tell that Squeaky, from Raymond's Run, is self-assured because she knows, in her brain, that she is going to get first place in the race. This proves how self-assured she is, because, she is so confident she KNOWS that she will get first place because she is the fastest runner. She is also competitive because she won't accept anything but first place in the race, that's a sign of her competitiveness because she could be willing to do anything for her win. Squeaky is also supportive because she decides to coach her brother Raymond, who has a mental disability, in track. While running, Squeaky sees Raymond, her brother who has a mental disability, running alongside the track with her, and realizes that he could be a runner, too. Which fuels her to coach Raymond and make him the best runner he could possibly be.