As far as at home gym practice, I agree with JBS. Most of the training should be done at the gym and left there. Sure, if your daughter wants to do extra thats fine(just like wanting to do extra multiplication). I drew the line at no acro stuff. Handstands, cartwheels, stretching, working on splits, front limbers(I must have seen 1000+ of those) are all things they can do in the house without much risk of injury. I think where JBS is coming from is no structured home practice time is needed. I only let my daughter do what she was doing without a spot in the gym, so if she was doing BWOs just fine, then she could do them at home.
Some gyms make the parents agree not to coach their child at home. We had to sign a form saying we would not in any way coach our child. Ok, I wouldn't know how to coach her so that wasn't an issue. Yes, I would watch handstands or BWOs or whatever and she would tell me to let her know about form---legs straight, toes pointed as much as they can be? There is also the never ending "can you time my handstand?" Now, with alot of hours in the gym for team, she doesn't do much at home except the timing of the handstand---don't know why that has stuck, but its pretty harmless.