From the Super Mario Wiki
Minnie is a young girl from Flipside's second floor in Super Paper Mario. She once extremely liked fortune telling, and always believed every fortune she got. At the end of the game, she hears about the Dark Prognosticus being overturned by Mario and company. She then realizes that she can't always rely on fortune tellers to find her own path. She then asks herself: "Where does the path begin?" She then decides to go ask a fortune teller where her path begins, thus it starts all over again. Her charm-obsessed Flopside lookalike is Winnie.