With that in mind, I studied manuscripts and paintings made in 1420. That helped me get a better sense of the clothing, hairstyles, and buildings. And I also rented several films, including Joan of Arc, with Ingrid Bergman. Joan of Arc lived during that time period in Lyon, not far from Paris. I'd check with Bruce and the curators at the Getty for accuracy.
Marguerite is a terrific female heroine.
Ultimately, she saves the day. There were girls who were apprentices and women who were professional illuminators. In fact, I've discovered in my research for other books that women had wider roles in the workplace in the Middle Ages than we might assume, especially compared to other times in history. We can't help but make comparisons between you and Marguerite. As we turn the pages, we are watching Marguerite illustrate a book.