Is this story good so far?

It is certainly different which is rather refreshing and it has flow and a certain style plus I like the dialogue. I was a little confused as to why you named one Winter - presumably because she is the one who brings winter to earth but her sister is called Leigh. I would have expected Summer or Spring so what significance does the name Leigh have in the story. Whatever the reason I would like to know where the story is going and that is an achievement in itself. Good luck with your writing.