. . . Wow, his sister makes every wicked stepmother look like a kitten. And roses are not Dio's favourite flower.

Cindy as Cinderella was a bit of derp and naive enough to trust her Fairy Godmother (a Type-A, Well-Intentioned Extremist who believes that torture and compulsory smiling make for a perfect world) and wedded the prince in order to get out of her life as a serving girl. She honestly wanted to make the marriage work out because Prince Charming was in love with her . . . for all of five minutes because that's his nature. So she got rather bitter after the nth time he cheated on her. She was trapped in the role of the princess--even more so than when she was a maid.

You could say there was a major case of arrested development and not much maturation between the time when she was a naive girl and a bitter princess. Hence she can play around with cute furry animals and kill people for her job. As one of the most normal-looking Fables, she gets to travel the world and she loves her job so much because of the freedom it affords her--she really hates the idea of being trapped.

There may be more if they ever do her origin story or cover more of her in the spin-off series focusing on female Fables.

Dio meets your other characters--what happens next?