Board Thread:Character Discussion/@comment-4839682-20131003142941/@comment-22525977-20131006033336

Of course Snow had no idea what would happen if she spilled to Cora. That doesn't matter to Regina—she put her faith in Snow and Snow broke that faith, and the one good thing in Regina's life died because of it.

I also don't think Snow was smirking when she got excited about Regina being her mother after all—she was a little kid and she was excited and happy, not smug. What Regina saw was a smirk, because Regina was in a really bad place emotionally on top of having been trained her whole life to assume everyone is out to get her (abuse does that to people).

Snow was a tiny bit more culpable for Daniel's death than Regina was for Eva's—neither knew it would happen, but Daniel died because of the information that Snow provided, even if she provided that information without understanding what would happen if she did. And then everything escalated out of control on both ends over the next, what, fifteen years or so? until the Dark Curse happened.