If the girl is competitive, I think they all go through this. I want my pitcher to give a crap. I think it gets the best out of them. The more they do it and are in those situations, the less you will see of the ups and downs. My daughter knows, If I see a tear, she gets pulled. Therefore, she knows that it hurts the team when she loses it in the circle. How the pitcher responds is usually how the team responds. At the end of the day, it will get better with age and experience. Good luck and enjoys these early moments.