Joan Marsh's Role

Does anyone know what part Joan Marsh played in POLLYANNA. She would have been six or seven at the time. I'm guessing she's the child Pollyanna saves from getting hit by the car although this little girl seems a bit younger. She might be one of the children at the beginning sending Pollyanna off to live with her aunt. Joan of course later became a fairly well-known blonde starlet of the 1930's.