When it comes to the other Cullens, like Alice, Kol's sister could be both intrigued and a bit dismissive. Alice's visions might seem like a novelty to her at first, but then she could start to resent them if they interfere with her own plans. And with Jacob, she might be amused by his werewolf nature. She could see him as a more natural predator compared to the 'tame' vampires of the Cullens. Overall, her interactions would be a mix of curiosity, rivalry, and in some cases, friendship.
If Kol's twin was in Bella's body, her personality would likely change the story a great deal. Kol's twin would probably be more assertive and less passive than Bella. She might not put up with Edward's over - protectiveness in the same way and would be more likely to go off on her own adventures. This could lead to her getting into more dangerous situations or uncovering secrets faster.
One possible plot could be that Kol's twin sister, being a vampire in the Twilight universe as Bella Swan. She might be intrigued by Bella's relationship with the Cullens. Maybe she tries to interfere in their relationship out of jealousy or a desire to understand human - vampire love better. Since she has her own vampire powers from the Mikaelson lineage, it could create some interesting conflicts with the vampires in Forks.
As a Mikaelson twin, Bella would likely become more assertive. In the Twilight series, Bella was often more passive, but in the Mikaelson world, she'd need to be tough. She'd have to learn to use her newfound powers quickly. Also, her relationships would change. Instead of being focused on Edward or Jacob, she'd be dealing with the complex family dynamics of the Mikaelsons. Her sense of loyalty would expand to include her new family, and she might become more calculating in her actions to protect them.
Well, perhaps the story could be about Kol's twin as Bella Swan trying to find a way back to her own world. Along the way, she has to navigate the complex relationships in Forks. She might befriend some of the characters like Alice in a different way, sharing with her some of the prophetic knowledge she has from her Mikaelson heritage. And when it comes to the werewolves, she could have a more diplomatic approach compared to Bella, due to her experience dealing with different supernatural factions in her own world.
Klaus would probably be very intrigued by Bella. He's used to getting his way with most people, but Bella is not easily swayed. So he might start by trying to charm her, but she would be resistant. For example, he could offer her power or protection, but she would be more concerned about her own values and the people she cares about in Forks.
Well, Bella's deep loyalty, especially to Edward, could be something that Elena might envy or admire. On the other hand, Elena's ability to handle multiple relationships in 'The Vampire Diaries' might seem strange to Bella. However, they would probably learn from each other. For instance, Bella could teach Elena about the more solitary and self - controlled nature of the Cullens, while Elena could show Bella how to be more open with her feelings towards others in a group setting.
She might become more assertive. In the Twilight series, Bella is often rather passive, but in the Mikaelson family, she would need to be more forceful to hold her own. She'd have to learn to be more cunning and strategic, like the Mikaelsons are.
Well, on one hand, Edward could be proud of Bella having such a powerful connection in the vampire world. But on the other hand, he would be constantly on guard. The Volturi are a powerful and dangerous group. Bella being Aro's twin means she is part of that world in a much more direct way. This could lead to arguments between them as Edward tries to keep her safe while Bella wants to explore her new identity and the powers that might come with it.
She might become more protective. As Silas's sister, she would have a natural inclination to safeguard him, which could make her more assertive.
Bella could interact with Sam and Dean in a very interesting way. Given her own experiences with the supernatural in the Twilight world, she would have some knowledge to bring to the table. She might be a bit of a nuisance to them at first, like constantly asking questions and fangirling a bit. But then, as she proves herself useful, like by using her knowledge of Twilight vampires to help them with a similar - type of supernatural being they encounter. Sam would likely be more patient with her, while Dean might be a bit gruff but would eventually warm up to her.