She might meet her younger self. It would be an odd yet fascinating encounter, as she could see how she used to be and compare it to who she is now.
She might meet Aro, one of the leaders of the Volturi.
Bella could meet a street-smart local who shows her all the cool, off - the - beaten - path places in New York. This person could teach her how to navigate the subway system and where to find the best street food.
Bella could meet an old neighbor. This neighbor might tell her about the changes in the neighborhood over the years. Maybe there are new families, new stores, or even some interesting local events that she has missed. It would be a great way to bring a sense of familiarity and newness to the story at the same time.
Maybe Bella will have some amazing adventures with Peter in the past. She could witness historical events together with him, or they might fall in love in that different time period.
She might meet her past self. This could lead to some really interesting conversations and self - discovery. Maybe she'll learn things about her past that she had forgotten or overlooked.
Bella might meet her former teachers in Phoenix. These teachers could have a different view of her now that she has been through so much in Forks. They might offer her some words of wisdom or advice that could influence her decisions regarding her future. Also, she could meet some family friends who were part of her life before she moved to Forks. Meeting them could bring back a flood of memories and emotions, and they could play a role in her self - discovery process as she tries to figure out her place in both the Phoenix and Forks worlds.
I think the most exciting part would be when Bella and Peter start to influence the past in some way. Maybe they accidentally change a small event, and then they have to figure out how to fix it or deal with the consequences. It adds a lot of drama and tension to the story.
She could meet soldiers coming back from World War I. These soldiers would have their own stories of war and survival, and Bella might be drawn into their tales.
She'll probably meet Stefan and Damon Salvatore. They are central characters in Mystic Falls.
Obviously, Edward would be deeply impacted. He has dedicated himself to Bella, and her new evil nature would force him to reevaluate their relationship. Jacob, who has always been in the mix with Bella, would face a great deal of turmoil. And don't forget Carlisle and the rest of the Cullen family. They have accepted Bella into their family, and her going evil would be a major threat to their way of life and their values.