Read and answer the question.
Cinderella

In a kingdom, there was a maiden named Cinderella. She lived with her stepmother and stepsisters. They always treated her unfair.
One day, a prince of the kingdom invited maidens to his party. Her stepmother asked Cinderella to help her stepsisters prepare all the needs. After they left home, a fairy Godmother appeared in front of Cinderella. The fairy helped her dress with her magic power. The fairy said that the magic power would disappear at the midnight.
When Cinderella arrived in a ballroom, the prince was attracted and asked her to dance with. The midnight almost came that Cinderella ran away. However, she left one of her glass shoes behind. The prince found it and vowed to marry the owner.
Tomorrow morning, the prince went from house to house and he reached Cinderella's house. The prince asked every maiden to wear the shoe. Her stepmother laid that there was no maiden but Cinderella's stepsisters.
Suddenly, Cinderella appeared and tried the shoe. It fit on her foot. Then, the prince invited her to his castle and married her.
Who helped Cinderella prepare to the party?