>>58503100They "picked" her, because she was designed and designated to be TF's pokémon "professor" studying pokémon energy and had created her as a foil almost to Sycamore. So when they decided to replace Sycamore (people ignoring how he was causally friends with Pokémon Hitler right up until he fired the Ultimate Weapon, small wonder he's gone - either removed from his office or resigned in shame for failing to see the danger), they had a ready-made replacement.