Her wanting to do/try ALL the sports is a good problem to have for now. From a health perspective it's better for kids to be generalists than specialists plus of course trying many things will give her an idea of what she's best at.
Absolutely, there is a lot of pressure to specialise, but it is not good when done way too young. Some of Australia's best sportswoman excel at multiple sports even crossing over at the elite level and example of this is tennis No 1 at retirement Ash Barty who was an amazing cricket player.
Learning a wide range of skills is a benefit in the long run with far less chance of picking up major injuries and imbalances from early specialisation.
Last week we had a mid year parent teacher meeting where she was described as being a free spirit with a very strong sense of self.
Having just come back from shopping down the coast, I managed to get a new pair of shorts from the mens section of the sports store, ladies shorts are just not made to do a full range of movement in unless they are leggings (yuk). I was also able to get a new toy, a cable bar to open up a few more rehab prehab exercises but to also use with bands to mimic traditional barbell exercises. It unscrews to be easiliy portable for mobile clients.
I also have ordered a copy of Dr McGills book on the lower back, looking at injury prevention and rehab. It has been on my wish list for a while and it was discounted by $50 in the online bookstore. Reading his research papers and covering a lot of his research at uni I see the rather high price tag as an investment. Especially as it also comes with a LOT of online content including videos.
I find it hard to empathise with people that have back pain having never experienced it,