One interesting Bella and Charlie fanfiction could be where Charlie discovers Bella's vampire side in a more comical way. For example, he walks in on her using her super speed to clean the house and just stares in shock.
There might be a fanfiction where Bella and Charlie have a heart - to - heart conversation about her relationship with Edward. In this story, Charlie gives her some really fatherly advice that changes how Bella views things.
One interesting storyline could be Bella's relationship with Charlie from a different perspective. Maybe she discovers a long - lost family secret that Charlie has been hiding all along, which changes their dynamic in the Twilight universe.
One great 'Twilight Bella is alpha' fanfiction could be 'Bella's Alpha Ascent'. In this fic, Bella discovers her inner alpha strength in a really unique way. It might show her leading the pack in a new way, different from the normal Twilight dynamics.
One interesting 'bella is blind' fanfiction could be where Bella's blindness adds a new layer to her relationship with Edward. Maybe he has to use his vampire senses in a different way to protect her. For example, he might rely more on his sense of smell to detect danger around her since she can't see it coming.
In some fanfictions, there could be a plotline where Bella and Charlie have a heart - to - heart conversation about her relationship with Edward. Charlie might finally come to fully understand the depth of their bond and the sacrifices Bella is willing to make for love. This could lead to a more accepting and involved Charlie in Bella's vampire - related affairs, adding a new dimension to their relationship.
A fanfic named 'Bella and Charlie: Reimagined' is also quite good. It reimagines their relationship in a more complex way. For example, it might include flashbacks to Bella's childhood and how Charlie was always there for her in ways we didn't see in the original books. It also delves into how their relationship evolves as Bella gets more involved with Edward and the vampire world.
Some fanfictions could revolve around the idea of baby Bella having a special connection to the supernatural world right from infancy. This could lead to all sorts of adventures and unique storylines that deviate from the original 'Twilight' plot. For instance, she might have some sort of premonition ability as a baby that the other characters have to figure out.
One interesting Bella's brother Twilight fanfiction could be where he has some sort of hidden power that he has to keep secret from everyone in Forks. Maybe he can communicate with the animals in a way that's different from the werewolves in the story.
Perhaps in the fanfic, there could be a situation where Bella and Charlie have to team up to face a new threat in Forks. This could strengthen their bond and make them see each other in a different light. They might have to rely on each other's unique skills to overcome the danger.
You can try fanfiction websites like Archive of Our Own. There are a large number of Twilight - related fanfictions there, and you can search specifically for ones involving Bella and Charlie.
If Charlie raised Bella, it might change the way she interacts with the vampire world. He might try to keep her away from danger more fiercely.