At first, Jewelry Bonney wasn't set to do anything that important to One Piece's overarching narrative. She might have been among the nine Supernovas introduced in the Sabaody Archipelago Arc, but that meant surprisingly little. According to Oda, he created these characters in rapid succession with no plans for them to excel in the New World; if he hadn't decided to expand upon their roles, Bonney's capture before the time skip might have been the last anyone saw of her. For all anyone knew, Bonney was meant to vanish into obscurity, never to be seen again in the New World.
Source：https://www.cbr.com/one-piece-jewelry-bonney-theory/
