One popular 'Bella is already a vampire' Twilight fanfiction is 'The New Life of Bella Swan'. It takes the concept and explores how Bella's relationships change when she's already a vampire from the start. Another is 'Bella's Vampire Beginnings' which delves into her early days as a vampire, her new powers and how she copes with the vampire lifestyle.
I'm not sure about a specific one titled exactly like that, but there are many fanfictions in the Twilight universe where Bella is a vampire early on. You could try searching on fanfiction - specific websites like Archive of Our Own. They have a large collection and you might find some great stories with this premise just by using relevant tags like 'Bella as vampire' and 'Twilight' in the search bar.
In such a fanfiction, it could change the entire dynamic of Bella's relationship with the other characters. Maybe she'd be more confident and powerful from the start.
One unique element could be the different power dynamics. Since Bella is already a vampire, she doesn't have the same vulnerability as in the original story. For example, her relationship with Edward might not be as protective - based. Another element is how she fits into the vampire society right away. In the normal story, she has to be gradually introduced, but here she's already part of it, so it might change the way other vampires view and interact with her.
One great 'Twilight Vampire Bella fanfiction' is 'A Different Kind of Life'. It explores Bella's life if she had made different choices regarding the vampires. Another is 'Bella's Hidden Powers' which delves into the idea of Bella having undiscovered abilities. And 'The Vampire Bella's Quest' is also interesting, following Bella on a new adventure in the vampire world.
Well, 'A Different Shade of Twilight' is quite popular. In this fanfiction, Bella has a different personality and she approaches the vampire world in a more assertive way. It's really interesting to see how the story unfolds with this new Bella. Also, 'The Vampire Bella Chronicles' is a series that delves deeper into Bella's experiences as a vampire, exploring aspects that the original books might not have covered fully.
One interesting aspect could be how their relationship dynamics change. In the original, Edward was the vampire and Bella was the human, so reversing their roles might lead to a different power dynamic. For example, Bella as a vampire would have more physical strength and speed, which could make her more protective of Edward. Also, Edward as a human might struggle with his mortality compared to Bella's immortality, creating new tensions and storylines in the fanfiction.
One great fanfiction could be where Edward and Bella's relationship is explored more deeply in a different vampire society setting. For example, they might be in a vampire clan that has unique rules about human - vampire relationships.
There's a fanfic titled 'Bella, the Ancient Vampire'. This one delves into Bella having been a vampire for centuries. It shows how her past as an old - time vampire affects her relationship with Edward and the challenges they face in a modern - day vampire world. It's really interesting as it twists the normal vampire - human love story we know.
Since Bella is already a vampire, her character development could focus more on her coming to terms with her new existence in a different way. She might not have the same initial struggles with bloodlust as she does in the books. Instead, she could be more interested in exploring the vampire culture and history right away. This would lead her to interact with different vampires, not just the Cullens, and gain a broader understanding of their world. This, in turn, would shape her character into a more worldly and independent vampire.
In some fanfics, a possible plot twist is that Bella, as a vampire, has a different sire than Edward. This could lead to a whole new set of alliances and rivalries. Maybe her new sire has a dark past or is part of a vampire clan that is at odds with the Cullens. This would force Bella to re - evaluate her loyalty and her place in the vampire world.
One common theme is the exploration of Bella's transformation into a vampire in more depth. Another is the relationship between Bella and Edward, but often with a new twist. For example, some fanfictions might focus on how they deal with different challenges as vampires together.