Question after question

I first want to start by saying I love coaching, in all that I have to say I really do. I am having such a hard time trying to keep my cool. I am coaching under a women who is a very nice woman but I do not agree with many things she says. A lot of it could be my pride or the fact that I want the girls to keep getting better at the game of softball. I struggle with attitudes. This year I have already had a girl quit. I did not beg her to stay on the team and the head coach wishes she were still here. Although I do know that the girl had a terrible attitude, her mom cursed me out, and she made the team chemistry go down, should I have fought through it? Should I have begged her to stay on the team (which I had done twice now)? I do not think that begging someone, who I nor the team wants to put up with, to be on the team would have been the best decision. I made the decision for the whole team. Truly did I though? Did I really think about the team or was I so taken back by a 14 year old calling me a name that I let anger consume me? The team wanted her gone because of how she treated them but did not stand up to her. So I was made out to be the bad guy. Is that how you handle people who are rude to you? You ignore it?? I tried to be nice to her, at first she was my favorite (I know we shouldn't have favorites). The other coach said it would not have happened if she would have been there. Well, why not show up once and a while? Why would you let a girl talk to the coaches, players, the other parents, and her own parents that way??? By allowing her to quit I was trying to point out to her that things are not all about her! But was I making things all about me and trying to prove my authority? The girl always back talked and if you tried to correct her she would quit...do you allow her to curse and talk others down? I am not for players putting the other girls down, so I made a decision and stuck with it. Now, I am having to pay the penalty of not having a good player on the team. The team chemistry is great now, yet I struggle with being under this other coach. She does not show up to games or practices. I know things come up...but do they that often? I know that it says in the bible all authority has given by God....but at this point in the season I wanna know why. Why does things like a sport get to me so much? I try to be so passionate and love on these girls. For the most part it is great and then I let the little things get to me. I let a 14 year old girl quitting or a coach not listening to me affect my whole day. At practice I submit to the coach. Something I have never done! Maybe that is why, God is getting glory from me learning. I cannot really ever figure it out. I just know that when I see the girls eyes light up when they make a play or get on base is amazing. I love how excited they get about the game or how they will do anything for the team. I enjoy teaching them things for the first time and seeing them finally understand. I love watching them teach each other or encourage each other. I love when they want to do consequences for their mistakes and then video tape it haha. They try hard, love racing and playing games, what more can you ask for!! Like I said, I truly love coaching!