what did emma mean when she said "its regina. thats who we should blame" from last sunday's episode?

Emma already have many prejudice feeling for regina, she tolerate her because she know regina love henry, beside maybe she think if aurora can handle loosing her true love, why not regina?
She doesn't know about how rumple, hatter and whale talk regina into it or how miserable regina when she was young, she doesn't know the full story, I think she just jump to conclusion without knowing the truth

I blame *Cora*!! Emma has a *grudge* against Gina that will *hopefully* begin to ease (because of *Henry.*)

**•Here's an article on what Emma was *apparently thinking* at the time; (this article is NOT by me! It is by 'Schmaky' from '2x08-EpisodeDiscussion')•**

"Regina is to blame" Wow I've never seen a character get so much slack for a statement than that one right there and I am flabbergasted as to why. From my interpretation, Emma was first talking about Henry and his curse and how it's her fault. And then Snow talks about the Big Curse and flippantly saying how it's her fault. Then they start talking about faith and as Snow walks off Emma stares off into nothing and from what I interpreted... it finally clicked for Emma. Like, for real. It finally clicked in her brain what's happened in the last 28 years. Not only did Regina actually create the poisoned turnover but there was this curse that tore apart her family... and Regina did that. Regina is at fault for both the sleeping curse and the Big Curse. And Emma finally clicked it all together and was like "Whoa.. she's not just some annoying thorn in my side, she's actually an evil *(please avoid obscenities)*." But hey, that's just my interpretation..."