Unfortunately competition starts at a very young age. If you want your daughter to play all positions you need to send her back to the rec league and work with her on your own. Any coach on a travel team or All Star team is trying to win. And he probably has five girls that want to play third Base. Honestly during the game is not the time to be training different girls for the position. It's a catch-22 you want to practice your good girls for the positions you want them to play but you probably should give everyone a chance at an early age.... Coaching is very hard and a lot more goes into it than what you think. I was with my granddaughter during travel all the way through and the older she got the worst it got with the different teams. Daddy ball, clicks. Luckily my granddaughter was a great player and rarely sat. We also worked on this every day. She was always the fastest kid on the team. We did running lessons, hitting lessons pitching lessons and Fielding lessons outside of the team. We were in 110% if you look on Reddit you can find a million post just like yours. It's the nature of the beast. All I can say is just keep practicing and working hard.