Cinderella contained blood and mutilation.
Sleeping Beauty shouldn't even be a story for kids.
Belle had very envious sisters.
The Little Mermaid is actually a heartbreaking tragedy.
In the original story:
In the Hans Christian Andersen version, the small print in the agreement is that Ariel's legs will hurt all the time, as if she were walking on knives. Since pain and seduction don't mix, in the end the prince marries another woman and Ariel throws herself into the ocean, where she turns into sea foam.