The idea works and it's great you got the ball in the shot as they're so hard to capture. To me this is more about a family memory snapshot then a ribbon-winning photograph. That doesnt mean it's a bad shot, just that it wont be as appreciated by others as it will for McKayla and her family and friends.
I'd like to see a tighter crop on the girl, as the man and boy are not important elements of the photo. She does have a look of hope. Also, the photo is a little crooked.
Nice snap but could be improved with editing. Leveling the horizon, a tighter crop to take some of the distracting background away, and some work with colors, levels and curves would turn it into a pretty good photo, IMO.