I'm another one who has no problem letting my DD (10) know that a commitment and sacrifice is being made for her to participate in her chosen activity and she is expected to work hard and do her best in return. I also constantly let my girls know that if the love and passion isn't there any more, we will reconsider the commitment at the next possible time (always AFTER a season commitment etc).
If my child wasn't paying attention during practice, I would make sure there were consequences at home.
Are the coaches not as bothered by this as you are?? I'm asking because I coach preteam ages 5-8 and it would definitely not be tolerated in my group.
I actually make girls skip a turn and sit out in my regular rec 4-6yo classes if they aren't paying attention!!
If she was in my group I would give her a verbal reminder about paying attention first. I would make her skip her turn and watch the other girls take that rotation. If she still had no clue what to do, I would sit her out for X minutes.
Swinging on the ropes in between turns also wouldn't be tolerated, same thing there: verbal reminder, then sit out (but I love the idea of making them climb it instead!!). If she likes rope climb, perhaps pike holds or something else "boring" on the rope might do the trick.
Now if for some reason the kid couldn't hear me or see me while I explained the station, I do allow questions right after I explain. But the questions usually come from the girls paying attention, the ones who don't are off in la la land and don't ask until we come up on their turn. And there's also a big difference between asking something like "where we supposed to do 15 or 20 on each leg?" When they come to station 3 of a multi-station rotation and standing there dumbfounded or playing with other equipment, KWIM?
As a coach, I remind the girls fairly often of the expected conduct in practice. The are expected to stand up and be attentive, focusing on me while I am talking, period. It is as much for safety as it is for making the practice run smoothly. We have plenty of fun while we practice, lots of high fives and hugs at the end as well as joking around during practice BUT they still know what the expectations are.
If I was in your shoes (and I have been!) I would ask to meet with the coach and ask what you can do to help your child behave better in class, and also let them know that you are OK with them doling out what disciplinary action they deem necessary (sitting her out, sending her home, whatever). You would be surprised how many parents refuse to see that their special Snowflake could do any wrong and I would simply let the coach know that you see this, acknowledge it and is on the coaches side in this. Good luck!