Board Thread:Spoilers!/@comment-6175354-20140218233629/@comment-24577094-20140314011736

Or what if Regina was Dorothy? Back when she was a teenager, she was good, so it's not such a character contradiction. And if Regina killed Zelena's sister (even if only by accident, as in Wizard of Oz), that would be the perfect motive for Zelena to "take everything away" from Regina. The theme for revenge in the series seems to be over loss of a loved one.