I am a Minnesota writer. I realized this only after my first book was published in 2009. One reader called it “a crash course in being Minnesotan.” Reviewers noted that my characters were oddly formal, obsessed with grammar, wanting to connect with others but unsure how to do so—all traits that I had grown up surrounded by and passed on to my characters. A friend said that she would never want to break up with one of my characters because …