Now I'm disagreeing with myself -- of course the thing that's supposed to be at the heart of the movie is how Elsa slowly but completely shuts herself away from her sister, and the idea is that the sister's love melts her heart. I mean, I get it!

I'm just addicted to the ice castle impulse, which to me isn't necessarily yoked to the sibling love. I just feel at the end like there's no reason Elsa shouldn't feel, in some way, like she wants to go back to her castle, maybe. That the castle is always there, even if you have lots of love to keep you away from it. Maybe not very Disney...