You got to love it when a story knows how not to overstay its welcome. As much as I find fiction shorter than a novel less enjoyable in general, some stories are just better as short stories, novelettes, or—as in the case of A Spindle Splintered—novellas. This multiversal reimagining of Sleeping Beauty is a lot of fun, but I think Alix E. Harrow would have had a hard time sustaining the suspense and interest…