Pokegirl Fan~
Liko>>>>>Ash
Or maybe they could've done an obvious thing... Musicals. Or they could've even gone and done a more tomboyish route and had Pokemon-ified American Football. Or even made her aim to be the White Tree Hollow/Black2 equivalent champion. Or even something that they made up themselves! There were so many possibilities that they could've had with Hilda, but for some reason they just flat-out dropped her.
It's a shame. I would have loved to see some moments between her and N since he did appear in the anime.