I don’t know how long you’ve been in the states, but as some others have said, all awards should not be considered equal.
I know you’ve deleted the original post with the outline of a particular trainer’s accomplishments, but please bear in mind that US Dressage Finals is not nearly as impressive as the name would seem to indicate (especially when it comes to freestyles). It’s not quite the national championship that you might be envisioning. It feeds from regional finals, which is completely separate from the CDI level that your daughter will need to eventually be competing at to be under any sort of international consideration.
So while placing at this show is certainly an accomplishment, a list of of CDI show placements would be more impressive.
That being said, her now trainer very well may not be her next or forever trainer. You really need a trainer that is very accomplished with young horses right now. And considering you’re already having some lameness issues, I’d steer away from the FEI young horse classes now and possibly forever, so don’t necessarily look at trainers that seem to take horses into FEI young horse classes year after year. Those classes can put a lot of stress on a young horse and you seem to already be having overworking issues with this young guy.