I’ve spent the last couple of weeks with an empress. Napoleon’s wife, Josephine Bonaparte, to be exact. Heather Webb’s Becoming Josephine is such a vivid and engaging read, it’s hard to believe that the novel is based on real historical events. And Heather brings those events to life beautifully on the page. You can hear the swish of a flowing gown on a marble floor, feel the chill of a haunted palace chamber,…