Okay so I LOVE the 12 dancing princess. My self published novel After Realm is a gothic urban retelling of this. So it wasn't even an option when I found this story. I enjoyed it like I enjoy most retellings of this story, so at a solid C level. 
 The descriptions were great, the author followed the basic fairy tale plot line. She did manage to created a little bit of her own voice as to why the girls dance. Like normal a curse, but she tweaked it enough to make it her own. 
 My big issue was this, they were princesses, in a medevil castle, in fancy gowns with boring blah princess lives. I would have liked this better if she'd tweaked it a little further than this sterotype.