The New Yorker: "The Entire Northern Side Was Covered With Fire" by Rivka Galchen

Here's another marriage in trouble, this time from the wife's point of view. And again, a child is at risk. Trish is a novelist whose husband has left her. She's pregnant, beginning to worry about money—the novel's success is nice, but probably not enough. 
Her brother tells her that her husband has been writing a blog called "I Can't Stand My Wife." It turns out that her friend David knows about it, too.
She has a meeting with some "movie people" and they're interested in completely changing ...