The theme of love and care could be explored. The nanny is there to provide love and care to the child in Edward's life. And Edward might learn about different forms of love and care through this experience. Additionally, there could be a theme of identity. The nanny may have her own identity issues, and Edward's vampire identity further complicates the situation in the fanfic.
Well, it could be about Edward from 'Twilight' needing a nanny for some specific reason in a fan - created story. Maybe he has a child in this fanfic's alternate universe and can't take care of it alone, so he needs a nanny. It could also be a comical take on the usually serious Edward character, showing him being clueless about childcare.
Survival. Since it's a war situation in 'The 100', survival is likely a major theme. Characters will be fighting for their lives and trying to meet their basic needs like food, water, and safety.
Perhaps it's a story where a female character, say Alice, has some unfulfilled needs. Maybe she wants to have a more human - like experience for a while, and another character helps her meet those needs. It could involve things like going to a human school dance or having a normal family dinner. This would add an interesting twist to the Twilight universe as we usually see the vampires trying to blend in while also having their own vampiric desires.
I'm not sure specifically as I haven't read it. But generally, a 'Twilight' fanfic might be about a nanny's experiences in the world of 'Twilight'. It could involve her interactions with the vampires, werewolves or other characters from the 'Twilight' universe, and perhaps her own personal growth or love story within that setting.
The theme of self - discovery is also prevalent. Bella, in the role of a nanny, discovers new things about herself. She might find out she has new strengths or weaknesses. For instance, she could learn that she's more resilient than she thought when facing the supernatural events that occur around the Cullen household while taking care of their children.
One interesting nanny twilight fanfic could be about a nanny who discovers the vampire world while taking care of a Cullen family member. She might have to deal with the secrets and protect the child from other dangerous vampires in Forks.
Love could also be a theme, although it might be a bit more complex given the different natures of their respective stories. Maybe it's not a romantic love at first, but a love for each other's strength and the way they face challenges. The fanfic could explore how they come to respect and care for each other in a way that goes beyond just a simple acquaintance, and perhaps over time, that could develop into a deeper form of love that is unique to their combined story.
One possible theme could be freedom. Just as the Emancipation Proclamation was about freedom in the real - world context, it could be translated into the Twilight universe as a character's journey towards freedom from certain constraints, like a vampire breaking free from an old - fashioned coven's rules.
One possible theme could be sacrifice. Maybe Twilight Sparkle sacrifices herself to save her friends or Equestria. Another theme might be dealing with grief among the other ponies after her death.
One possible theme could be redemption. A character who has made mistakes in the Twilight world might be seeking redemption and this is how they break their silence. For example, a vampire who has been living in the shadows of their past actions.