Personally, I say do what works for you. If neither you, nor your DD, are negatively affected by watching a bit more often, then go ahead and watch. Obviously, if it affects her performance or breaks rules at your gym, or means you get nothing done, then that's different.
I am assuming your DD is relatively new / lower level? I know that at first, I wanted to watch as much as possible for these reasons:
1) I work all day and enjoy just watching my child do what she loves - almost like vegging out in front of the TV relaxing my brain after work - but better as I'm watching my own kids
2) Gymnastics is new to me, and I find the drills and progressions (the whole learning process) fascinating. I like learning new things, and I learn through watching the teaching process.
3) I was/am truly trying to get a sense of whether or not my child has some kind of talent, or not. I mean, we spend buckets of money that we don't really have, and I want to make good (and realistic) decisions about what goals and paths may make the most sense for her so I can gently steer the ship - not just for my daughter, but for the whole family.
4) New skills! Early levels have new skills more often. I was there for my daughter's (and my son's) first kip, and first back handspring. The milestone skills were a joy to witness.
5) Coach/gym philosophy and trust-building. Being new, and trying to navigate what the heck journey we are on, and whether this gym, these coaches, are not only safe, but "right" for my daughter (and what that even means) means I need(ed) to be there and really see for myself how classes were run, how much time is spent on things, how groups are formed, who moves up and not and how and when. I know CB likes to say "trust the coaches" but I don't recommend blind trust. I recommend observation and building a knowledge base of the practices and philosophies your gym follows so you can decide if those practices align with your daughter's needs. I have a much better sense now of our gym's philosophies, as well as a sense for when I need to speak up vs shut up.
It's been over 1.5 years now, and I do have to say that I'm just getting to the point where I don't necessarily want to watch that much anymore. My DD is in comp season, and watching the same routines, then stretching and conditioning are getting less exciting. I have mostly developed trust (though I still question things at times), so I don't feel like I have to keep an eye out for possible injustice. I find myself happier to do other things now.
But the first few weeks of uptraining, I'll probably be finding an excuse to stick around at a few practices to maybe see how she's faring since otherwise I only get to see her eating and doing homework, which is even less exciting that watching rope climbs
