Some fanfictions focus on Bella's little sister being the key to solving a mystery in Forks. It could be something related to the history of the vampires in the area. She might discover an old diary or a hidden cave that holds secrets that could change the relationships between the vampires, werewolves, and humans in the town.
There are often fanfictions where Bella's little sister gets involved in a love triangle that's different from Bella's. Maybe she falls for a werewolf who's also friends with Jacob, but there are complications because of the vampire - werewolf feud. It makes for a really engaging plot full of drama and tension.
Well, in some of these fanfictions, Bella's little sister might have unique powers. For example, she could be able to communicate with animals in a way that no one else in the Twilight world can. This would lead to all sorts of adventures, like helping the Cullens avoid danger by getting warnings from forest creatures.
Another plotline could revolve around her relationship with Bella. For example, she might be jealous of Bella's relationship with Edward at first but then come to understand and support it. She could also have her own love interest within the Twilight universe, perhaps a new vampire or werewolf character that was introduced just for the fanfiction.
There could be other minor characters from Forks that get more spotlight in these fanfictions. For instance, the classmates of Bella's little sister who start to notice that there's something strange about her. They might become curious and start to dig deeper into the secrets of the town, which then draws in the vampires and werewolves.
Some fanfictions might introduce new characters that become popular. For instance, a new vampire who befriends the little sister. This vampire could have a different set of powers or a unique backstory that makes them stand out. Also, other members of the Cullen family, like Alice, could have a closer relationship with the little sister in the fanfiction, which makes her a popular character in this new narrative.
One plot idea could be that Bella's sister discovers she has a special power as a vampire, like being able to see the future. This could lead to her trying to prevent bad things from happening to her family and the Cullen family. Another idea is that she struggles with the morality of being a vampire while also being in love with a human. She might try to find a way to exist without harming humans, which would create a lot of internal conflict.
In some fanfiction, the little sister could be a human who is adopted by the wolf pack. She then has to learn their ways and culture. She might struggle at first, but eventually becomes an important part of the pack, forging deep bonds with the wolves and even finding love within the pack.
One plot idea could be that Bella's sister discovers Caius's true nature as a vampire but instead of being afraid, she is intrigued. She starts to secretly study vampires and their lore, and in the process, catches Caius's attention. He then decides to keep an eye on her, leading to a series of tense yet fascinating encounters.
In some Bella Assassin Twilight fanfiction, Bella could be trained by an ancient vampire who saw her potential. This training makes her a force to be reckoned with in the Twilight universe, and she may even change the power dynamics between the vampires and werewolves with her new skills.
There are fanfictions where Bella and Jacob end up traveling the world. They use Jacob's wolf - like abilities to their advantage, like in a story where they help rescue endangered species in remote areas. This shows a different side of their relationship, focusing more on a shared purpose rather than just the romantic aspect.
One interesting 'Si Bella Twilight Fanfiction' story could be about Bella exploring a new power that was not in the original series. For example, she might discover she can communicate with animals, which adds a whole new dimension to her character and the story. It could lead to her having new allies and facing different challenges in the vampire - human - werewolf world of Twilight.
There are jasper and bella fanfictions where they team up for a mission. Maybe they have to go undercover in a human high school (since Bella has the advantage of being more in tune with human ways). They face various challenges like hiding their vampire natures from overly curious students while trying to complete their mission, which could be something like finding a missing vampire relic.