12U team.
Just my take, but at that age, she needs to be on a team where she's actually playing. If that means finding a slightly weaker team overall, so be it. She's not going to get better at the game unless she's in the game and she's not going to enjoy the game if her primary position is 'spectator'.
For a 12u player, my opinion would be the same regardless of what her softball goals are.