From Bulbapedia, the community-driven Pokémon encyclopedia.
Rose (Japanese: ヤオヘイカミさん Yaohei's wife) is a character of the day who appeared in A Double Dilemma, and the wife of Yaohei. She did not receive an official name in the Japanese version.
A resident of North Petalburg, Rose, like everyone else in North Petalburg, is obsessed with Petalburg City Gym Leader Norman and his family. She was one of the first to notice that May and Max had returned while delivering some food supplies to the local Pokémon Center. Excited at the thought of Norman's children being in the area, Rose immediately contacted the press and everybody else in town so they could see the children. She led the crowd's fanfare, requesting that May perform several Coordinator moves.
Rose was also one of the people who started booing Ash when he gained the upper hand in a battle against May. Later in the episode she got in a fight with Yaohei because he said the May and Max she saw were fakes and that the ones he saw were the real ones.