“Brawler” is her third collection of stories. There are nine of them, like the “Nine Stories” volumes published by both Nabokov and Salinger. Most of hers, like Salinger’s, were first published in The New Yorker; they seem like a homecoming, and honestly, something of a relief. If they have a shared theme, it is how the bedrock of family crumbles, and its members are forced to shift into new formations, occasionally tectonic.