if your DD wants specifics on what she needs to do better I would ask her "what corrections does your coach give you all the time?" (in my DD's case it is generally more pointed toes or more chin up or whatever) When she tells you what they tell her, say "well work really hard on those!" I used this approach with my DD when she was younger - it had the benefit of forcing her to go to her coach not me (because what the heck do I know!!??) for corrections, and also forced her to really LISTEN, REMEMBER and THINK about what they were telling her. You know, helped the "in one ear out the other" thing. 
This is a great idea. Sometimes Puma Jr thinks she "has" skills a little more solidly than they really are, so having her watch video without me saying a word helps her see what she needs to improve on without making her feel bad about herself. She has this hand signal (basically she makes circles with a thumbs up) that means "tape me". I don't get to watch much practice at all, but she learns a lot from what I do tape and likes to analyze herself. I always tell her that the only things she can control is how hard she works and how well she takes correction. Good luck! It sounds like she's off to a great start!
