I'm not entirely sure as I haven't read it specifically. But generally, a historical fiction novel set in that context might be about a lady and a unicorn in a particular historical period, perhaps exploring themes like courtly love, the significance of the unicorn in medieval or Renaissance symbolism, and the life of the lady within that historical framework.
As I haven't read the novel, it's hard to say for sure. But based on the title, the main characters are likely to be the lady (la dame) and the unicorn (la licorne). There may also be other characters such as the lady's family members, servants, or people in the court if the story is set in a courtly environment.
The theme of the Blanche comic strip might be centered around love and sacrifice. Maybe there are storylines where characters make difficult choices for the people they care about.
Blanche Monnier was a French woman who was locked away by her mother for 25 years. Her mother kept her in a small, dark attic room. The discovery of Blanche was a shock to the public. It was said that Blanche had a relationship that her mother disapproved of, which might have been the reason for her mother's extreme act. Eventually, Blanche was found in a pitiful state, and this case highlighted the issues of family control and the abuse of power within families.
One key event was Blanche having a relationship that her mother didn't like, which led to her being locked up. Then, there was the discovery of her in that attic room, which shocked the community. Also, her long - term isolation and the resulting poor state she was in are important aspects of the story.
I don't know as the sentence doesn't give any details about the content of the novel. It could be about anything - a love story, an adventure, or a mystery.
In 'Blanche on the Lam' detective novels, it could be the setting that makes them unique. If the stories are set in a particular and unusual place, it can greatly influence the mood and the type of mysteries that unfold. Also, the way the author weaves the story around Blanche's situation of being on the lam, perhaps with a combination of humor and suspense, could be what sets these novels apart from others.