So Elsa is a druid?
During the song in this short Elsa made a dress for Anna and it had flowers in it and she also caused a flower to pop up on Anna's head while making it. That pretty much states Elsa controls nature in general and not just the powers of ice and snow. They should really develop this! I would love in Frozen 2 for her to bring about storms or cause plant life to grow. It would be awesome!
Killing must feel good to God too, he does it all the time, and are we not created in his image?