Board Thread:General Discussion/@comment-26221372-20150319011048/@comment-24674051-20150819205555

I think we can chalk one up for Emma not thinking things through.

Yes, Hook and Rumple both warned her not to mess with the timeline. In fact, Hook had stopped Emma from trying to rescue Marian earlier.

Emma is not going to leave someone to die if she can do something about it. That's just not who she is. And I may very well have done the same thing in that situation.

Emma was aware that leaving the woman she saved (not yet knowing it was Marian) to roam free in the past could (and likely would) make a mess of the timeline. So she reasoned that taking her forward to Emma's time would solve any potential glitches, since the woman would not be in the past to mess things up. And taking her to Emma's time could not possibly mess up a future that had not yet (from Emma's perspective) been written. She just did not stop to consider what possible consequences could occur to having a woman who had supposedly died in the past just miraculously appear in the present without touching the intervening years.

Keep in mind that both Hook and Rumple went along with the plan. and one or both of them definitly had the power to take some action that would have corrected the situation. So you can't put all the onus of this situation on Emma.