Marguerite Behlmer is a supporting character in Atelier Sophie: The Alchemist of the Mysterious Book.
She's Oskar's mother, and she manages the grocery store in Kirchen Bell. She's bright and caring, and talks to anyone like if she was an older sister. She's strict with her son, but also doting sometimes.
Being a grocer, the player can access her shop to buy vegetables and other foodstuffs. Unlike other characters, she has no personal events or storyline, only appearing in other characters storylines.