>>52500280She says go be your true self because her whole arc is stereotypical find your identity muh teenage angst bullshit, its not really that deep
And Sylveon teras into fairy because everyone's ace in endgame teras into one of their types. Sylveon I guess was chosen because its not part of a trio or duo of eeveelutions
Its one of those things where everything together looks a certain way, but if you examine the parts it's pretty easily explained away