I beat LoZ:BotW!!!
Simply put, because she's gone from a terrible person with a massive chip on her shoulder to a little-miss-perfect who does no wrong and bears absolutely no resemblance to the person she used to be. It barely seems like she's been reformed and it's more like she's been replaced with a completely different person. She has no negative traits whatsoever, and she has only gained positive ones (becoming a natural leader and matching Twilight when it comes to intelligence).
And of course, she sucks up the humane five's ability to develop, because nearly all of the development in the films goes to either her or Twilight.
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