I'm sorry, but I totally disagree. I guess we'll just have to agree to disagree.
Looks like lines, extension, carriage, posture not as objective as you think.
I found her skating very polish, emotional, finesse, every movement is elegant and graceful. Pretty balletical for me.
You said
"The Japanese girls on a whole are very refined and polished skaters".... I don't see a big difference here. But Who? Rika? Satoko? Wakaba?
Wakaba one of my fav skater... but I can't say she is balletic... especially by your criteria ...
Mao either, she has very different but unique and powerful style of skating.
Rika? I was in love with her Riverdance... but her lines, posture, carriage? polish or balletical? no!
I'm not complaining about any of them not being balletic (In my subjective opinion). I like them for who they are. And don't think everybody should be "balletic".... booooy how boring it would be.