I had to draw your attention to a new book that would provide great discussion material: Revolution by Jennifer Donnelly. It is set in the present and during the 18th century, taking a detailed look at the French Revolution from several perspectives. It also covers themes of grief and depression, and hope.
Jennifer Donnelly first came to my attention several years ago, when she released an award-winning book, A Northern Light, set in 1906 New York, focusing on women's rights. It is available in a book discussion tote from Franklin County Library System AA Kit 21.
Both these titles are excellent for group discussion. Jennifer also wrote The Tea Rose and The Winter Rose.