This is not the first Disney movie that deals with sister relationships. Lilo and Stitch also worked with sisters, sometime n a more realistic way, because they got angry at each other. Anna barely seemed angry at a person who has let her completely alone for more than 5 years.

And after reading your post I appreciate this Frozen version of the tale much more, reading you I realized that the sister-sister change is a win (to avoid making a romantic plot!) and the other one is the lack of an evil character. To me, the biggest win in this movie is the amazing self-discovering plot of Elsa (and the superb Let It Go scene).

If you think about it, the lack of an evil character and the female-female family relationship are also present in Brave…

I would still be interested in seeing the original story because the kai/gerda thing is very romantic and I love stories about purity beating evil. But I think the way Disney has switched up their own story with the sister dynamic also has good potential. I’m curious how it will play out since I don’t have a sister myself (or any sibling bond) so it seems like new territory. I also like how now the snow queen has a more identifiable struggle. Disney has always changed up fairy tales and that’s okay because I love the hopeful tones they give them. In this case it just seems more inspired by the book rather than based on it.

But it’s a little harder for me to think of stories where it’s girls helping girls. So I think it’s a nice little switch up. Plus I think it’s kind of clever that Disney has Anna saving Elsa pretty much from herself. It’s not like she’s kidnapped or in any true danger, I’m just assuming it’s something like just telling Elsa she’s loved and she’s more than her powers or something like that. So in the end you have your conflict, with someone who needs help, but it also adds and makes the character Elsa much more interesting and complex.