Board Thread:Spoilers!/@comment-24304025-20170602212916/@comment-2153169-20170801183235

Eskaver wrote: Crack Theory that LadyTremaine is Rapunzel, lol.

We don't know enough about the witch, but she could play the antagonist of Tremaine or the person beind the scenes. Basically, possibly the Rumple for the Alice-Tiana-Cinderella-Rapunzel (?) stories. I only say antagonist for Tremaine because we have yet to have an old lady turn into a young witch/fairy godmother that sort of happens in fairytales. Besides having the FGM (not be Tigerlily) but someone opposing Tremaine that could be even more evil could be cool.

My first idea was that the Witch is the one from Into the Woods. Don't know why. So, it'd work with your theory that Lady Tremaine = Rapunzel and that Witch as her kidnapper.