Board Thread:Wiki-Related Discussion/@comment-2153169-20171120155605/@comment-25982945-20180507221238

Speculations about the Wish Realms (before 7x21 and 7x22)

The wish characters were created by the wish but, had to live in a real place.

"Princess Emma" is the personality Emma had in the Wish Realm, but Emma really was transported to an actual place.

So my theory is that, the same way there are different continents on Earth, the wish created a place in a real land/universe, a universe where the NEF already existed. Tremaine, Jacinda, Gothel lived in this parallel universe before episode 6x10, then the wish occured, altering their lives.

It's like adding a page to a book. NEF has its own book/story/land/universe, and the Wish Realm was adding to this place. The flashbacks (8 years of Henry/Jacinda's adventures) are in an alternate version of the NEF universe, post wish of 6x10.