On another note, regarding last night's plot...
So, is the Snow Queen's sister, Gerda (the redhead who she didn't accidentally kill by turning into a block of ice)...Anna's and Elsa's mother? Anna is noticeably the same shade of red hair as Gerda. Snow Queen told Elsa they're related. Anna and Elsa's parents fled Arendelle ( and what, got lost at sea? I can't remember from Ep. 1) mysteriously and we still don't know why, and when Elsa started closing in on this, that's when the Snow Queen appeared.
"There is no use trying," said Alice; "one can't believe impossible things." "I dare say you haven't had the practice," said the Queen. "When I was your age, I always did it for half an hour a day. Why, sometimes I've believed as many as six impossible things before breakfast." --Alice in Wonderland