The Winter's Tale

The other's the elegant queen of Arendelle; regal, reserved, and warmhearted whilst the other's free-spirited, parsimonious, and cold.
There's a thick difference between the two, but often thought as one for they share the same physical attributes and in this case, power.
The other's haunted by the past whilst the other's driven by it.
And then there's the intriguing part, the other's swirling down the dark corners of her own mind and is as long gone as her parents submerged in thirty thousand feet of water.

"Elsa's dead... because of you."