My dd is/was going through something similar. She just finished her 2nd year at L8 (although 1st year she was injured most of the year). She had a GREAT season. But now she is struggling with L9 skills. She felt so much internal pressure to get to L9 and thought her coach was really pushing for that, too. On top of a very intense school schedule plus her desire to spend time with school friends and even get a PT job, it was just too much. She was ready to quit the whole thing.
Then on Saturday, the coach pulled her aside to find out what was really going on. He completely took all the pressure off her and suggested she do another year at L8. She can continue to work her L9 skills and put them in if she wanted to....or leave them out if she had a bad day. But there would be NO pressure about them. Then, he offered her a PT job at the gym. (She's 15.)
In 1 day, my stressed, unhappy kid went from miserable to having a great day at practice. She can ENJOY the sport and not feel all the pressure. We are all SO happy with the outcome.
Is your dd feeling pressure to get skills and move up? Can you take that pressure off of her and have her repeat the level? Or try to find out what it is really about? Maybe she is done with gym....or maybe there is a way it can be fun for her again.