What did the stepmother do to stop aschenputtel from attending the feast?

The stepmother imposed impossible tasks on Aschenputtel, such as sorting a huge pile of lentils from ashes, hoping to keep her too busy to attend the feast. Additionally, she forbade Aschenputtel from going, believing that her daughter would be the only one to shine at the event. Despite the stepmother's efforts, Aschenputtel received magical assistance from her fairy godmother, enabling her to attend the feast in splendid attire.