Board Thread:General Discussion/@comment-23962251-20131011025554/@comment-5281989-20131014042213

both Red and White Queens lived in Chess Castles-- it's the theme for their story, versus the Queen of Hearts, which is based on cards.

I agree though, that Cora is not likely to be part of this story-- similar to how Aurora's kingdom, while still in The Enchanted Forest, was not part of Snow's.