Sacrifice. That one word sums up this whole film. Elsa sacrificed a TON of things to keep Anna safe. Kristoff sacrificed the chance to possibly be with Anna forever, because he thought that Hanz could save her. And Anna sacrificed herself to save her sister over kissing Kristoff. Saving her sister, knowing it might be her last act made me break down and sob. She could have easily kept walking and have her true loves kiss. Hell, she paused and gave one last look to the guy.