These are just my own theories and based on various myths. Everyone is familiar the story of "Cinderella," a folktale famously of rags to riches. While the modern version is based on the children's book originally written down in 1697 by Charles Perrault and then later by the Brothers Grimm in 1812, it's got roots further back in time and in other places. It's believed that "Cinderella" was an oral folktale in the Middle Age. There is a similar older version story written by the Greek author and geographer named Strabo, between the years 7BCE and 23 CE. It's about a Greek slave girl who ends up marrying the king of Egypt (source, Wikipedia). There's even versions of the theme in Asia.
The story has a fairy godmother, although in the older version there wasn't. Instead, Cinderella spoke to the grave of her mother, and it's where a tree grew. This warm character of the fairy godmother that appears in the modern version of the story, is maternal and kind, which makes sense, as this is the spirit of Cinderella's own mother.
As for the slippers, some believe that the magic in the story altered. Cinderella's slippers were so dainty that the wicked stepsisters chopped off bits of their own feet to fit the slipper. They did this because they wanted to marry the prince but he was sickened. Gruesome horrible self mutilation, which is very similar to the fashion trends of foot binding. More horror to come. Later at the wedding of Cinderella and the prince, the stepsisters have their eyes gorged out by birds.
To read more go to the link of Cinderella at Wikipedia here.
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