Cinderella's Mother is a minor character from the musical film, Into the Woods. Her grave is located at the willow tree in the woods.
Into the Woods
As the film covers the Brothers Grimm versions of classic fairytale, the ghost of Cinderella‘s mother takes the place of the Fairy Godmother. When Cinderella goes to the tree after her stepfamily went to the ball, her mother sings a song and then leaves surround Cinderella as they combine to form a dress for her to wear to the ball.