The two characters are a miller's daughter and a king.
An unthinkably gruesome fate means ghastly, horror.
The King is rude and unpleasant .
He felt sad and miserable because he didn't like how she was being treated.
A person who works in a mill.
I think that he is good because in this story he helped the miller's daughter.
I know: Hansel and Gretel, Snow White, Cinderella, Red cap, Sleeping Beauty, The wolf and the seven kids and the Elves and the Shoemaker. My favourite is the elves and the shoemaker.