A perfect little novella. But not a short story. Sometimes I read the reviews after I've read a story-- I've learned better than to read them before I read a story-- and it's amazing how many people describe this as a short story. It's a chapter'd novella-- a fast easy-to-gobble-down tale complete with mystery solved, HEA, and villains punished. It is not a short story which should be, well, short and as a direct consequence much more open-ended. 
 This thought isn't specific to this story, just something that has been building up. It's just nice if people take care to properly label their reviews.