Hmmmm.... I think maybe that I've become so bothered by this that I probably nag constantly. She's not horrible all around I know this but I admit that it's becoming all I see... that's awful on my part. Thanks for the reality check!As her coach, tell her what you need from her. Don't just tell her to "improve her attitude" or "be a better teammate." Be specific. Tell her exactly what behaviors you need to see. And make it about you and the team: "I need you to [X], and as a team, we need [Y], and when we have that we can accomplish [Z] because........" Don't make it about her and what she is doing wrong, or she will likely tune you out. Also realize that punishment doesn't change behavior in the long term. That's why pulling her out of a game only worked for a little while. Rewards are much more powerful for changing behavior. In fact, behavioral psychology says that be effective you have to reward the behavior you want at least 4 times for every time you punish behavior you don't want. Leave her home from a tournament? Okay, but you have to balance that by setting a behavioral expectation and rewarding her when she makes steps toward it. Why should you reward her just for being a decent human being? Because the science says that how you change behavior.