Because 16 hours a week of gymnastics costs quite a bit of money, and if she does meets then it probably costs a fortune. So money, money would be why a parent might try to edge a daughter out of gymnastics.
I did this level of gymnastics as a kid. It taught me many things in life.
How to work hard and improve at something through many small iterations.
Learning multiple events is tricky and useful.
Dealing with injuries is an important part of life. Nobody goes through their day to day at 100% all the time. Working through the challenges is part of life.
I think gymnastics is one of those 'learning to learn' activities like chess.
I would strongly recommend looking into BJJ when she wants to move on from gymnastics. It has very similar benefits and is substantially cheaper. It can also be done at a slower pace than gymnastics, you could take a few classes a week instead of 4 x 4 hours.
Or the injuries. They suck too.