She’s got very good balance!
Is she taking dressage lessons or hunt seat?
She is sitting in a chair seat but in a jump saddle it is very difficult to maintain the head, hip and heel alignment.
Her contact is good. Very consistent and a nice quiet seat and no extraneous motion.
The only thing I would have her change is her position and have her lower her knees and lengthen her thigh which again is hard to do in a jump saddle.
I hope she stays with it. She is awesome.