She has a blind change in her bar routine at the moment but maybe that is meant to be pulled when they start competing. He has had her working her new skills into the routine because he wants her to not just have the skill but have it connected into a series---does that make sense? Maybe I don't fully understand. I probably don't, this whole jumping into optionals can be a bit hard on parents I think.
What is she doing "out" of the blind change? A front giant (going over the top of the bar in reverse grip giant) or is she swinging back in the same direction in which she came?
****If she's swinging back in the same direction after the 1/2 turn, so long as it doesn't go to handstand, she can compete that skill in Level 8. It is a B if it does not go to handstand. This is a 10yo tops skill and very age and level appropriate for a 10yo L8.
****If she does the front giant out of the blind, that's two Cs in a row. Her start value drops to 9.0. Ouch.
In either event, the skills are giant circle variations and not releases.
The 1/2 turn of the blind (if it's performed as a B) would fulfill a requirement at Level 8.
I understand training the blind to handstand because it's very progressive toward other skills. It would elongate her routine at Level 8 - especially depending on where the clearhip was in the routine - which could present some issues. I'm not as much of a fan of bhs/bhs/tuck. Maybe a switch/tuck would be more progressive.
Although everyone would have their own opinion on this, it's not bad sportsmanship to compete a C element that is not exempted. I think coaches and judges would wonder why the coach is doing that, but you should do what's best for your child. Clearhip 1/2 Cs are allowed at Level 8 and are insanely hard and no one blinks negatively when gymnasts do those.