Hey Fabian!
Ok so I know this problem quite well as I have had very similar situations with players that I have worked with in the past. From what you have said about her personality and character I would say the doing too many tournaments and matches would probably not be a good thing right now. As you said she will end up losing more confidence and get down on herself, which ends up slowing down her improvement. I would say a tournament once a month is fine but perhaps reduce the league matches to one a week to give her more focus on training and improvement time.
I think it’s important to play matches to understand where you need to improve but at the same time you need a break from them as well to go away and at her age enjoy the practice and improvement stage. It sounds like to me you are doing the right things though and that she will be a great player if she keeps going with that attitude!
Dan 🙂
