Well, perhaps in the fanfiction, Bella Swan, being Zeus's daughter, is sent to the world of Twilight as a sort of mission. Zeus wants her to bring balance to the vampire - human - werewolf situation. So, Bella uses her godly abilities, like super strength and the power to communicate with animals (a trait she might inherit from Zeus), to make everyone get along better. She might also face challenges from other gods or goddesses who don't want her to succeed in this mission.
In a 'Bella Swan Daughter of Zeus' fanfiction, the plot could involve Bella's discovery of her divine parentage leading to a whole new set of relationships. She could be courted by other mythological beings who are interested in her connection to Zeus. At the same time, she has to deal with her feelings for Edward or Jacob in the context of her new identity. Her powers as the daughter of Zeus, such as the ability to fly or create storms, would make her a very different character than in the original Twilight series, and this would change the dynamics of all her relationships and the overall story.
Well, it could involve Bella having special powers from being Poseidon's daughter. Maybe she can control water to protect Forks from some new supernatural threats. She might also have a connection to the ocean that draws her away from the normal vampire - human drama in the original 'Twilight' story.
Well, one possibility could be that Bella discovers her true parentage as Hades' daughter gradually. Maybe she starts to show powers related to the underworld, like being able to communicate with the dead or having some control over shadows. This could put her in a difficult position in the normal world of Forks as she tries to hide these new abilities from her friends and family while also trying to understand her new identity.
Well, one possibility could be that Bella Swan has to deal with the chaos that comes with being the Joker's daughter. Maybe she struggles to balance her normal life, like in Forks, with the dark and unpredictable world of her father. She might have some of the Joker's traits, like a wild sense of humor but also a bit of madness that she has to control.
The plot could involve Bella being raised in the Twilight world without knowing her real mother. Then, through some magical event, she finds out she's Bellatrix's daughter. This could lead to a conflict as she tries to figure out where she truly belongs, between the two very different worlds of vampires and wizards. Also, there could be a plotline where she has to face the dark legacy of her mother and decide whether to embrace or reject it.
She would be much more confident. In the original Twilight, Bella is often insecure, but as Zeus's daughter, she would know she has divine powers and a powerful lineage. So she'd be more self - assured.
Maybe Bella Swan discovers Cortez's work and it changes her perspective on something. For example, if Cortez is an artist, his art could inspire Bella in her own life in Forks.
Well, it could be that Bella is secretly an assassin all along in Forks. She's using her relationship with Edward as a cover while she's on a mission to take out some supernatural threats in the area.
One possible plot could be that Bella Swan, in this fanfiction, becomes a huge admirer of the Gilbert family. Maybe she is intrigued by their history in the town. She could start to study their family tree, trying to understand the secrets they hold. This could lead her to befriend members of the Gilbert family and get involved in their daily lives, which might be full of both normal family drama and some supernatural elements as in the original 'Twilight' and 'The Vampire Diaries' universes where the Gilberts are from.
Maybe Bella Swan could be transported to Asgard. She might be mistaken for a powerful sorceress because of her unique connection to the Twilight world. Then she has to navigate the politics of Asgard while trying to find a way back home.
One common theme is the struggle with identity. Since Bella is the daughter of Zeus, she often has to figure out where she belongs in the world of gods and mortals.