You and Ash were rivals over everything since you were little, but things changed a lot after you became teenagers and left town. When you fought, your rival didn't lose money, but instead did things the other told them to, in addition to breeding their Pokémon a lot to have the best qualities.

Right now you're in a fight where you win, and she's clearly upset, but at the same time she wants to tell you how she feels

"Dammit, you always cheat, it's not fair."