The credits for GK3 list Susan Silo as the actress for Madame Girard and Marcie. I don't remember a Marcie. The only thing I can think of is the woman at the train station, who does sound like Girard/Cazanoux, but I don't remember her being named. Also that would be odd, because the woman at the train station is a young woman. Susan Silo's voice seems better suited for old women.