The Girl Who Ruled Fairyland--For A Little While - Cathrynne M. Valente

Such a vivid, creative, and beautiful setting. Mixed with some great characters and adventurous story-building, this is one fantastically magical short story.
So descriptive, it feels like you can imagine Fairyland as if you could see it clearly.
I just hope Mallow makes good decisions with her new-found power. Provided it continues throughout the series. Which I can't wait to read on!