One possible theme could be family loyalty. In a mafia context, family often plays a crucial role, and a'mafia mommy' would likely be involved in protecting or guiding her family within the dangerous mafia world. Another theme might be secrecy. Given the mysterious nature, there could be many secrets she is hiding, either from her family, enemies, or both.
There's 'Mafia Queens of Mumbai' which, while not exactly the same as your novel, has strong female characters in a criminal underworld context. It shows how women can be powerful players in such a world. Then there's 'The Cartel' series which is more about drug cartels but still has that criminal organization feel that might be comparable to the mafia aspect in your novel.
One possible theme could be family unity. The presence of the adorable baby and the relationship between the mommy and daddy, despite the daddy's mystery, could be centered around bringing the family together. Another theme might be love conquering all. The love between the mommy and daddy could help them overcome the challenges presented by the daddy's mysterious nature.
One possible theme could be self - discovery. In a mysterious life, the main character often has to figure out who they really are.
One possible theme could be secrecy. The husband's mysterious nature implies that he has secrets, and the story might be about how these secrets impact their relationship and the main character's life. Another theme could be suspense. The mystery around the husband would create a sense of suspense as the reader and the main character try to figure out what he's all about. And family might also be a theme, as the marriage ties them into a family unit, and the mystery could be related to his family background or his role within the family.
Another theme could be imagination. Mommy Afton's bedtime stories might encourage children to use their imagination. She could tell stories about fantastical worlds where anything is possible, like a world where trees can talk and clouds are made of cotton candy. This would inspire children to be creative and think outside the box, while also providing a fun and engaging bedtime experience.
One possible theme could be identity. If mommy doesn't know the name, it might be about the character's struggle to find their own identity within the family or in general.
One possible theme could be neglect. If mommy doesn't know the child's name, it might imply that the child is not getting the proper attention they need.
Another possible theme could be discovery. Maybe the mommy and the Nepi girls are exploring a new place, either a physical location like a mysterious forest or a new concept like a different culture. This theme would involve elements of curiosity, adventure, and the joy of finding new things. Also, a theme of self - identity could be present. The Nepi girls might be trying to figure out who they are, what they like, and how they fit into their family and the world around them, with the mommy helping them in this journey.
One possible theme could be family reconciliation. Since they are getting remarried, there may be a process of making up for past mistakes and healing old wounds within the family.
One possible theme could be love, as it might be about the love between Bianca and her mommy.