SCARLET CARNATION is set in early twentieth-century America. What made you decide to choose this period? After writing MUSTARD SEED, the companion to YELLOW CROCUS, I got the idea in my head that I would return to the descendants of these characters every twenty years or so until I got to the 2000s. SCARLET CARNATION is the fourth in the series. I enjoy starting a novel with the constraint of knowing a rough period and the main character(s) and then researching the geographical and social setting shaping their current lives. The thematic through line in all of my novels is “How does the American caste system harm my characters and how do my characters create beautiful, faith-filled and open-hearted lives despite disappointments, while challenging the oppressive structures they were born into.”   How much historical research did you do for your books? Are you a history buff? I do a lot of research. My favorite way to learn about the era is to read the newspapers from that time. Newspapers.com is by best friend. While I also read non-fiction books for my research, I prefer the raw, happening in the moment information that I get in the newspaper. I’m fascinated by…