I don’t think I would say that she has started to believe yet. At Paley Fest Jennifer said that the way she would describe it is that Emma has started to figure out that something is not right in SB. I would agree with that statement but instead of saying that she is starting to believe, I would say that she is becoming intrigued with the idea of the book – not the idea of the people in SB being fairy tale characters just yet, just intrigued with how people in SB seem to resemble characters in the book, and now Jefferson has also talked to her about the book.
First off, she is a bounty hunter and is used to dealing with people who lie and cheat all the time so this is one incredibly skeptical woman we are talking about. Second, even though she is reading the book – and even seems to be reading the book looking for answers – she doesn’t really know where the book came from (neither do we) so she isn’t likely to even make the jump from finding the book might help her in situations like MM’s murder charges to actually believing MM is SW.
The reason I think that she doesn’t yet believe is that there is really no good reason, aside from the SW fairy tale, for Regina to hate MM so much. And Regina has pretty much shown Emma that she hates MM and wants her ocked up for murdering Kathryn. If I was Emma I would be trying to find SOME kind of reason for Regina to hate MM so much. Emma could see right through Regina’s “friendship” with Kathryn so I don’t believe she would buy that as a reason. As the mayor, I would understand Regina wanting justice but her desire for wanting MM to be found guilty goes beyond that. And if Emma was even remotely starting to believe, I would think we would see her taking a bit of an interest in the SW story and potentially talking to August and Henry more about the book. That may be upcoming in the next few episodes – hopefully so. At least she appears to be aligning herself with the correct people and figuring out who can’t be trusted now.