>>34861445It's Blue if you go by hints (the background she was introduced with in FRLG was blue like Red's red, Sugimori draws monochrome art of her in Blue, she's the remake of the Blastoise character from RGB and would have gone by that name if existed probably, Blue if you go by PokeSpe which picked her up and gave her that name obviously based on Game Freak unused material, etc)
It's Leaf if you go by unused internal data
It's exclusively and canonically Leaf if you are an autistic Bulbapedia editor
It's Girl if you go by what was printed in official media, which it isn't unusual, Silver is still called just Rival