my gymmie went through something similar (since may). i thought she was going to quit. she didn't come out and say it though, it was more her lack of wanting to go. tears. refusing to do skills she could already do or try a new skill she could do if she set her mind to it. i thought she was going to quit.
it was very painful for me. not just b/c she was obviously conflicted about it and wanted to quit but didn't want to quit. but because it was our life for 4 years and i have some good friends at the gym, as does she. ultimately it was her decision and it seems she's decided to stay. but, i know this could be her last year. she's 10. so i'm going to enjoy it.
one thing that i did realize was that no matter how much she loves it, she also needs a break from it too. so i told her we will not be missing out on all the fun stuff. we've already talked about some practices she will miss and the fun things we will be doing. she also knows if she needs a day off, her coaches are ok with her taking one off. i'm hoping that by taking a step back mentally (and physically) will help her. she does love the gym and seems happier now with her decision to stay.
but, it was several months of me being sad and grieving what i felt like was the loss of a big part of our life. it was hard to go through, me personally. even though in my head i'd already purchased a much needed new car with the tuition and meet fees and was looking forward to that extra $ .
like SCE said, it's a grieving process and let your gymmie and yourself go through it.