In HER BODY AND OTHER PARTIES, Carmen Maria Machado blithely demolishes the arbitrary borders between psychological realism and science fiction, comedy and horror, fantasy and fabulism. A wife refuses her husband’s entreaties to remove the green ribbon from around her neck. A woman recounts her sexual encounters as a plague slowly consumes humanity. A salesclerk in a mall makes a horrifying discovery within the seams of the store’s prom dresses. One woman’s surgery-induced weight loss results in an unwanted houseguest. And in “Especially Heinous,” Machado reimagines every episode of “Law & Order: Special Victims Unit,” generating a phantasmagoric police procedural full of doppelgängers, ghosts and girls-with-bells-for-eyes.