American Girl McKenna comes to life in this modern-day adventure about a determined gymnast who must focus on her strengths to overcome challenges and find a way to believe in herself again.American Girl McKenna comes to life in this modern-day adventure about a determined gymnast who must focus on her strengths to overcome challenges and find a way to believe in herself again.American Girl McKenna comes to life in this modern-day adventure about a determined gymnast who must focus on her strengths to overcome challenges and find a way to believe in herself again.