Other People We Married by Emma Straub
Not everybody likes short stories, and their circulation statistics here at the library seem to confirm that. When a writer is first published, it's often a collection of stories, so I say give newly published writer Emma Straub a try. She's the daughter of horror novelist (and Stephen King collaborator) Peter Straub and writing is in her blood. The stories do often revolve around marriage but the characters also include widows and singles. "A Map of Modern Palm Springs" concerns the unequal relationship between two sisters and was the story I liked best.