At this age the players want the ball. You will notice in games, players on the same team surrounding the ball and sometimes taking it from their own player. Playing 3V3 and 4V4 games helps to eliminate this problem because everyone gets a chance to touch the ball in a smaller game setting. A coach must try to help Mary realize that she will get a turn with the ball and that her teammates deserve a turn to dribble the ball in the game. NO YELLING AT MARY.
"You are on the top of your game today"
"You are an excellent listener"