I'm not sure specifically as I haven't read it. It could be about the Fennel family's experiences, their relationships, or some events that center around them.
Well, without having read the 'the fennel family papers a novel', it's difficult to say precisely. But generally, a novel about a family might cover generations of the family, their secrets, joys, and sorrows. It might also explore how family members interact with each other and with the outside world. For example, it could be about how the Fennel family copes with a particular historical event or social change. Maybe there are complex family dynamics like rivalries between siblings or different outlooks between the older and younger generations.