The Magic Riddle

The Magic Riddle is a 1991 Australian animated feature film directed and written by Yoram Gross. The film tells the story of Cindy, an orphan who lives as an indentured servant to her cruel stepmother, and features elements of famous fairytales including Cinderella, Snow White and the Seven Dwarfs, Little Red Riding Hood, Sleeping Beauty and Pinocchio. Robyn Moore provides the voice of Cindy and various other characters.

One night, Cindy falls asleep before finishing her chores, but an old lady sneaks into the house to finish the chores for her. Ertha, Cindys kinder stepsister, encounters the old lady, who reveals that she is Cindys Grandmother, and was kicked out of the house by the widow after Grandfather died. The same thing happens the following night, but the widow wakes up and chases Grandmother away. Ertha, who witnessed everything, tells Cindy about it.The widow is afraid that Grandmother will help Cindy find the will. Following the advice of her magic mirror, the widow puts on a salesman disguise and visits Grandmother in the woods, tricking her into entering The Castle of a Hundred Doors, from which there is no escape. Cindy, dressed in a red riding hood, arrives at Grandmothers cottage too late and is chased away by a wolf, which is actually the widow in disguise. ........

Source: Wikipedia