Caroline, for example, might be more accepting as she is also a vampire. She could help Elena adjust to her new life. Damon, on the other hand, might be jealous or feel threatened that Stefan made Elena a vampire. It could change the power balance between the three of them.
One reason for Elena bashing in fanfiction could be that some fans prefer other characters over her. For example, they might be big fans of Bonnie or Caroline and feel that Elena gets too much attention in the show. So in fanfiction, they might downplay or 'bash' Elena to give more focus to their favorite characters.
Elena's final romantic partner in the Vampire Diaries novel is Damon. Their love story is full of ups and downs, but they overcome all odds to be together.
Katherine turning Elena into a vampire changes her life in many ways. For one, Elena's diet changes. She has to resist the urge to feed on humans. Socially, she becomes an outcast among normal humans. Her perception of the world also changes. She starts to see the vampire society in a different light and has to find her place within it.
The story changes a lot. For one, Elena's place in the supernatural world shifts. She goes from being a target of vampires to being one of them. This means she's now part of the 'in - crowd' in a way. Her daily routine would be completely different. Instead of going to school during the day, she'd be prowling at night. And her relationships with the other characters would be redefined. Stefan and Damon would have to see her in a new light, and she might start to have a different understanding of Klaus too, not just as a threat but as someone who has given her a new kind of life.
It really depends on the perspective. Elena is often seen as the good girl, the one with a pure heart. She represents the moral compass in many fanfictions. But Katherine has this allure of mystery and a long history of survival. If you like characters with depth and a darker side, Katherine might be better in the fanfiction world. However, if you prefer the more traditional heroines, Elena would be the top choice.
Elena Gilbert in the 'Vampire Diaries' novel is a key figure. She's a typical yet extraordinary high - school girl at first. Typical in the sense that she has the normal concerns of a teen like friendships and school, but extraordinary because she gets pulled into the vampire realm. Her beauty and charm attract the attention of many characters, especially Stefan and Damon, which leads to a lot of drama and action throughout the story.
One common theme is the power dynamic. Kol is an ancient and powerful vampire, while Elena is a human - turned - vampire with her own strength. Another theme is the exploration of the unknown. Since Kol has a different personality compared to the other vampires Elena has interacted with, it's like she's stepping into uncharted territory with him. Also, redemption can be a theme, as Kol might seek redemption through his relationship with Elena, or Elena might see the potential for good in Kol.
One common theme is friendship. Since they were friends before any romantic feelings came into play, many fanfictions explore how that strong friendship foundation can either support or complicate a romantic relationship between them.