One possible theme could be mystery. Since it's a secret story, there must be elements that are not immediately known and need to be uncovered.
Love could also be a theme. Maybe Nomine has a secret love that is complicated by various factors such as family or social status. This could drive the plot of the story and explore the different aspects of love, like sacrifice, passion, and loyalty.
Since I don't have more context about 'nomine secret story', it's difficult to provide detailed information. It might be a story that involves secrets, perhaps a mystery or a hidden past of someone or something named Nomine.
One possible theme could be secrecy itself. How secrets are kept, what the consequences of keeping or revealing secrets are. Another theme might be about Melanie's identity, and how these secrets are related to who she is.
One possible theme could be mystery. Since it's a secret basement, there's an air of mystery about what's inside it.
Friendship could also be a theme. Since she can't rely solely on her royal status, she has to make real friends. Through her secret, she might attract people who like her for who she is, not what she is, and these friendships help her in her journey in the 'the secret princess story'.
One possible theme could be secrecy itself. How secrets can both protect and harm the characters involved. For example, a character might keep a secret to protect a loved one but end up causing more trouble because of it.
Another theme could be trust. If Cassandra is holding secrets, the story may deal with who she can trust with those secrets and how trust is built or broken in the context of secrecy. It could also show how others react when they suspect she has secrets. For example, they might become suspicious or overly curious. Additionally, a theme of self - discovery could be present. As Cassandra navigates her secrets, she might learn more about herself, her values, and what she really wants in life.
One possible theme could be family secrets. Virginia has a rich history of families with long lineages, and there might be hidden family matters in the story.
One possible theme could be self - discovery. If Nadege is on a journey in the story, she might be learning more about herself. Another theme could be friendship, if there are other characters involved and they form deep bonds with Nadege.
One possible theme could be betrayal. If it's a scandal, there might be someone who has been betrayed, like in a case of corporate espionage where an employee betrays the company.
One possible theme could be secrecy. Since it's a secret romantic guesthouse, the idea of hiding the relationship is likely important. Another theme could be discovery, as the characters might discover new things about themselves or each other during their time at the guesthouse.