I think if Emma had a twin, it would have been something we would have found out about a long time ago.
Why? We *just* found out that Regina has a half sister. This show throws in family members and connections willy nilly. A and E can literally magically hand wave in anything they want and cover it up with some sort of magical plot device. Its what the show *does*
Plus, what are the odds that Emma would meet her twin sister at a convenience store while they’re both stealing at said convenience store?!?!
Oh honey. What show are you watching?
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"He was a lot of things to me" "The only conclusion was love"