GymClaire, don't feel guilty. If they want her to come to a few practices, they are probably willing to take her, just want to see how she likes it. Same thing happened with my DD. She had an evaluation when we were switching gyms, HC told me, " I think we may take her , but let's have her practice for the week to see how it goes". DD practiced with the team for the week, getting to work with different coaches, all the girls. She worked well with everyone, made lots of new friends, had a great time. Found her new gym home.
It's a good thing that they want her to come to some practices. It says volumes about the coaches - in a good way . Good luck to her!