I just saw this thread and this question. What struck out to me was that the facial expressions seem to go with her moves instead of the music. So when gearing up for something (the turn in the beginning), it looks like “concentration face”. Then, when she lands successfully, she smiles, despite the music not having a happy feel right there.
Now, those are very human-like facial expressions, and I don’t know why the WTC wants to eliminate real emotion and expression for fake expression, but that seems to be the way… I mean, how about they do a musical theatre performance while also tumbling…