Bella's character often becomes more confident. As a vampire, she has newfound strength and abilities that make her less timid. For example, she may be more assertive in her relationships and in dealing with threats.
One interesting plot could be Bella's struggle to control her new vampire powers. She might face difficulties in adjusting to her heightened senses, like being overwhelmed by the smell of blood. Another plot could involve her relationship with Edward. Since she's now a vampire, their dynamic might change, and they could face new challenges together.
Well, one possible consequence could be that Bella starts to transform more quickly into a vampire. Since James is a powerful and rather cruel vampire, his bite might carry some extra 'oomph' that accelerates the process. She might also have more intense visions or nightmares during the transformation due to the nature of James.
She could also develop more compassion. Knowing she's bringing a new life into the world, she might start to see things from a different perspective, especially when it comes to the relationships within the Cullen family and their views on her pregnancy. This could lead to her trying to bridge gaps and bring the family closer together.
In the original, Bella is more of a damsel in distress. But as an assassin in fanfiction, she becomes more independent and self - reliant. She no longer waits for others to save her but takes matters into her own hands.
Bella may become a more adventurous character. Maybe she decides to try new things that she was always too afraid to do before because Edward was so overprotective. She could start going to parties, trying extreme sports, or exploring new hobbies. This new adventurous side of her would make her a more well - rounded character, and when Edward returns, he would see a completely different Bella.
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.
Bella might become more confident as she takes this step into a new life with Jacob. She could also become more assertive in dealing with the werewolf pack politics that come with being Jacob's wife.
Well, often the story develops with Bella having to deal with the new reality. She may face rejection from some in the vampire world who were part of her life before. The pregnancy could be a difficult one, with possible threats to her life. Paul would be constantly by her side, trying to find ways to keep her safe. And there could be a power struggle within the werewolf pack regarding this unexpected situation.
The plot changes drastically. For starters, the Cullens might have to deal with the fact that Bella is now bitten by a rogue vampire. They may face some internal conflict about whether to help her or not. Edward's character would be deeply affected as his love for Bella is put to the ultimate test. He has to decide if he can still be with her now that she's been bitten by his enemy.
In some fanfictions, Bella's character might become more confident. As an immortal, she no longer has the same fears of mortality. For example, she could be more fearless in facing dangerous situations.