Anhelina Hryhorenko is a typical 14-year-old girl in many ways—she loves art and isn’t a fan of math. And she’s excited to have her freshman year of school over. But she’s got a lot of unique qualities, too. For one, she’s a junior national champion with more medals than she can hold in two hands. She’s also the daughter of a former national cross-country ski team member team and the niece of a three-time...