Board Thread:Spoilers!/@comment-25926288-20160721010527/@comment-91424-20160721044455

While I've always believed, and still believe, that Anastasia is meant to be Cinderella's stepsister (as she is called Anastasia, like the stepsister in the Disney film, and a prince chose her stepsister over her, as described in "Heart of Stone" and "Dirty Little Secrets"), it is quite possible that her stepsister may be a different version of Cinderella...

Jefferson's adventure in Wonderland in the comic Out of the Past takes place at least approximately six or seven years before the casting of the Dark Curse (we know this, because Grace is two years old, and looks like she is eight or nine in "Hat Trick), and the Red Queen rules Wonderland by then (the March Hare mentions her). However, the show's version of Cinderella met the prince after (or around the same time as) David became prince in "The Shepherd", an event that takes place much later in the timeline (in this episode, Rumplestiltskin asks King George about the location of the Fairy Godmother, which leads to the events of "The Price of Gold", where Rumple kills the godmother and sends Cinderella to the ball, where she meets her future husband). So unless the Red Queen from Out of the Past is a different character (the Red King's mother, for example), Cinderella could not have met the prince yet.... Unless the writers messed things up; they've done it before ;-)