So, funny thing! My sister and I watched Wish about two weeks ago and in that time she rewrote it as a novel, but better!
We both saw a lot of fairy tale potential in Wish which was unfortunately wasted by the hand of Disney's corporate meddling. My sister, who's written several novels at this point, tried her hand at fleshing out the fairy tale and the characters and she did such a good job!
The first two chapters are up on AO3, with more to come soon!