Board Thread:Spoilers!/@comment-26261400-20150826194347/@comment-26116863-20150829032657

Here's my crazy theory: Emma is the dream catcher. The dream catcher is meant to catch all the bad dreams. Maybe that is referrring to Emma trying to fix everything, except now that she is the Dark One she would be willing to use any method necessary to achieve her ends. That is exactly what Gold did as the Dark One, after all. He often had good intentions, but the darkness influenced him to carry them them out in entirely the wrong way.

She is a bit of a control freak. She wants Henry to be safe, and she wants to make everyone happy. What the darkness seems to do is amplify one's flaws. It made Rumple even more cowardly and selfish.So, I think that her need to make everything safe and perfect could be what goes out of control in her case.

Just my though. Or, I could just be completly loopy : b