My DD is a 5th grade level 8, so is always in the Child/ Jr. A group. That group is so competitive we call it the Piranha age group! The winning AA for that group is usually 1-2 whole points above the next older group. So DD has to watch teammates with lower AA placing higher. But, I have learned from experience to take the medal pressure off her. Before every meet, I tell her that I'm proud that she's made it this far and I don't care how she places. Just go out there, have fun, and give the people a show.
What I do is either bring a small $5.00 total goody bag for her after each meet or let her pick out a pin from the vendors. So she has something to look forward to, no matter what. This has worked really well. She is a strong level 8, and does well, and if she places top 3 or in the middle, she's always happy.
I tell my DD this- "it's not the winningest kid who makes it to level 10, it's the kid who loves it so much they stay in the sport for the long haul". I hope your DD gets more comfortable with the placements....it just gets worse. Level 9 around here is just split into 2 groups, and they can be 3 years apart in age! Good luck!