Actually most of the Fairy Tales are dark with people dying, stealing bad peopel, People starving etc.
They were written in a differnet time when life was darker in general and tough and the fairy tales reflected that.
Most of the Grimms Fairy tales are very dark, other than the famous ones even Snow White has a witch who wants to kill her.
Do you know the kids game “Ring Around the Rosey”?
Did you know the game is actually about the Bubonic Plague?
Ring Around the Rosey is a dark ring you get when you get the plague.
A posey was thought to be a cure of the plague
And Ashes Ashes we all fall down, means you die.