Caroline could also be a character Bella meets. Caroline is known for her strong personality in Mystic Falls. She might initially be jealous of Bella if she thinks Bella is getting too much attention from the guys, or they could become fast friends if they find common ground, like their shared experiences with the supernatural.
She could interact with Elena. Since Elena is a central character in Mystic Falls, their paths are likely to cross. They might start as friends or rivals, depending on the story.
She'll probably meet Stefan and Damon Salvatore. They are central characters in Mystic Falls.
One possible plotline could be Bella reuniting with old friends in Mystic Falls. Maybe she has to face some past secrets or rivalries that resurface upon her return.
Caroline Forbes is another character. As a vampire herself in Mystic Falls, she could either befriend Bella or be jealous of her presence. Caroline is known for her strong personality and her relationships within the vampire community.
Well, it could involve Bella making new friends in Mystic Falls. Maybe she meets the vampires and werewolves there and gets caught up in their drama.
There might be a young local artist who becomes Bella's friend. Also, a mysterious old man who seems to know a lot about the history of the place where Bella has moved. And perhaps a group of teenagers who introduce Bella to the local hangout spots and their unique way of life.
Stiles is another key character. He's smart and curious, and he would probably be intrigued by Bella's arrival. They could team up to figure out some of the strange happenings in town. Also, Lydia, with her intelligence and unique abilities, could form an interesting relationship with Bella, maybe as a confidante or a rival in some situations.
I think there could be a local girl who becomes Bella's friend. She could show Bella around La Push, introduce her to the local hangouts, and teach her about their customs. And then there might be an older character, perhaps a tribal elder, who gives Bella wisdom and guidance about the place and its significance. There could also be some young boys in the tribe who are initially a bit wary of Bella but later become her friends.
There could be a local artist. This person could introduce Bella to the art community in New Orleans and help her see the city from an artistic perspective.
Maybe a co - worker at her new job in New York. This person could be a mentor or a rival at work, adding some drama to the story.
Another theme is love and relationships. Bella is known for her complex love life in 'Twilight'. In the Mystic Falls setting, fanfictions might show her forming new relationships or redefining old ones. For example, how she might interact with the Salvatore brothers in a romantic or platonic way. Also, the theme of self - discovery is common. Being in a new and strange place like Mystic Falls, Bella has to figure out who she is outside of her 'Twilight' context.