Edward is a likely candidate. Since he is so attuned to Bella, he might pick up on some strange behavior or scent that leads him to suspect she is hiding something.
One possibility is that Bella's secret could be about her having some special power that she has been hiding from everyone in Forks. Maybe she can communicate with animals secretly, which adds a new layer to her relationship with the werewolves.
I'm not entirely sure if there is a specific 'Bella has anorexia' Twilight fanfiction. There are so many fanfictions out there that it's hard to keep track of all the different themes. But given the nature of fanfiction and how it allows for creative exploration, it's very possible that someone has written about this. It could be an interesting, if somewhat dark, take on Bella's character.
No. In the original 'Twilight' series, Bella is a female character, and having such a theme goes against the established gender identity in the official story. It also might be considered inappropriate and a deviation from the general tone and concept of the 'Twilight' universe.
It could be her best friend. Her best friend might be the one who accidentally discovers Bella's secret in the fanfiction. And then they have to deal with the situation together, whether it's keeping the secret or helping Bella face whatever the secret entails.
A 'Bella has anorexia' fanfiction could imply a more complex view of the Twilight world's beauty standards. It could show how Bella, who is often seen as an 'average' girl in the story, might struggle with body image in a different way. This could also lead to a discussion about how her friends and family in the story would react and support her or not.
Well, it might signify her uniqueness. In the Twilight universe, Bella is already different as she is the object of Edward's affection and has a special connection to the vampires. Wings could be an added feature that sets her even further apart. It could also be related to some sort of power or ability she gains. Maybe she can use the wings to fly to places quickly, which would be useful in both the human and vampire worlds, especially when she is in danger or needs to reach someone fast.
Well, it could be about Bella having a secret power that she has to hide from the world in the fanfiction. Maybe she can communicate with animals secretly and is afraid of being seen as a freak.
It has expanded the Twilight universe. Fanfiction allows fans to explore different scenarios that weren't in the original books. For example, they can write about Bella and Edward in a modern world with different technology or social settings.
I'm not aware of any such fanfic. The 'Twilight' series is mainly about the relationship between Bella and Edward in a more traditional vampire - human love story context. Fanfics usually expand on the original story's themes, characters, and relationships in ways that are more in line with the general tone of the series, so a concept like this is rather out of the ordinary and not likely to be a common or well - known fanfic.