I really wish that Regina would emerge with her evil self. She's been acting like a shadow of herself all season long.
Why do people keep saying that Regina had brought Robin back with her? She really had no choice in the matter. It was Emma who had suggested that Robin join them. And it was Robin who made the decision to do so, despite Regina's initial misgivings.
It reminded me of an episode of VOY where there were two identical versions of the starship and the crew. The original Ensign Kim had been killed in an accident, so the original Janeway decided to take the other Ensign Kim from the duplicate ship that was destroyed. It just seemed weird, but like Janeway said, "Weird is part of the job."