As a coach I can teach a girl to hit, to throw, to field, and to catch, I can even teach one to understand how to out-think their opponents. But I can't teach a girl to be a good learner, I can't teach a girl to be open minded, I can't teach her to listen, I can't teach them to have a good attitude, no matter how interesting and exciting I try to make it. All in all your better teams are not nessecarily made up of the girls who have the most talent, the fastest, or have the strongest bats. The best teams will be made up of girls who listen and execute together better then the other team. A team will fail with nothing but talent if they don't get along and don't support each other. Your tryout is more about your DDs attitude and that of the parents as much as the coaches can get in the short time of a 2 hour tryout. If you are concerned about the coaches interview them, research them prior to the tryout. Know their history, if they have kids on the team, why they are doing what they are doing ( what motivates them).
If you are making the transition from rec to travel you are in for a big eye opening change. Your mind will have to be just as open as your DD's, sit, listen, watch, and learn. Then take what you have learned and practice it with your DD.
Don't mean to be "HILLBILLY", but for a bucket to hold water it has to have room, a full bucket will hold no more water. The same goes for knowledge you have to have room in your mind and heart to accept what is being offered. And inturn if it turns out to be bad pour it out and add some more. In the long run you should always be pouring out the worst and adding the better. You will be a better coach, parent, player, worker, boss, neighbor, and person.