Board Thread:Spoilers!/@comment-2153169-20170823175024/@comment-24769579-20170914212741

Chameleon-Guy wrote: Considering Alice is supposed to be crazy, yeah, maybe she knows about EF2 and fairy tales, but it would be a repeat of the Mad Hatter honestly.

I originally thought that too, however Jefferson's awareness of the curse was extra punishment as he directly saw his daughter happy without him. Whereas Alice's awareness could help Henry to believe. If she is aware she will probably be written off by Tremaine as crazy, like others have theorised.