Once Upon a Time…. there were two sisters. One of these sisters took her children to see Frozen. The other did not and could not understand why everyone kept singing “Let it Go” all the time. And then on the Once Upon a Time season 3 finale, Emma and Hook returned from the Enchanted Forest of the past with an unexpected stowaway in Rumplestiltskin’s urn; a woman in a shimmering blue dress magically emerged with ice crystals shooting from her fingertips. The first sister squealed. The second sister sighed…. and reluctantly borrowed the Frozen movie DVD. Now she “gets it.” We’re both looking forward to the Season 4 return of ABC’s Once Upon a Time with their new 11-episode arc incorporating characters from the movie Frozen. The Anna and Elsa story will likely be told in the standard OUAT format that see-saws between present-day Storybrooke and flashbacks to the pre-curse Enchanted Forest. We're curious how the Frozen characters will interact with ou