I love this theory!
It’s way better than what the show is probably intending to do, which is never to mention her again because it was only a way to parallel the Emma/Regina thing and force the snow queen into Emma’s history.
[adrotate group="5"]
You know what I can't continue with the dead people brought back to life list I'm out of space in the signature and now we have an underworld arc this is to much I quit why do you bring so many people back to life OUAT WHHHYYYY