My dear friend, Debbie, posted this gorgeous photo a few weeks ago on my Facebook page and said, “This is the area of the Severn River (in Maryland) I picture is the kids’ houses in ‘Beneath the Mimosa Tree.’ Am I right?” Indeed you are, Debbie. I’m sorry to bombard you, readers, with photographs of Annapolis scenery this week, but the weather is amazing here right now, and the sky and the water are just breathtaking. In the novel, Michael and Annabelle live in Pendennis Mount. When I attend book clubs and discuss the novel with folks who have read it, people often ask me if that’s the neighborhood where…