Well I tried to suggest her schizo dark side, but maybe it should be more subtle!
Ok I have a suggestion for a possible setting. If you feel you have a kick ass idea better than mine, dont hesitate
It could be some king of science-fiction setting, 1000+ years from now, on some icy planet. I think it could be cool to use a ''winter/snow/arctic'' setting because it's not too much used in movies/videogames and it has a lot of potential for interesting design ideas.
Some reference I can think of : Starwars episode V (the beginning of the movie), The Thing, Lost planet (video game), Icewind Dale (video game), any siberian landscape, etc
I gathered some pictures to better explain my idea