In the fanfiction, perhaps Bella's multiple mates are from different supernatural groups. This could bring about a unique dynamic where she has to balance the needs and cultures of each group. Maybe she uses her relationships to bridge the gap between the vampires and werewolves, leading to a new era of peace in their world. It could also mean that she has to deal with different forms of affection, like the cold yet passionate love of a vampire mate and the warm, instinctual love of a werewolf mate.
In this fanfiction, Edward might be one of the mates as he was so central to Bella's story in the original. Jacob could also be there due to their history. Additionally, there could be a character who is neither vampire nor werewolf but has some other supernatural power, like a psychic who can see the future. This psychic might be drawn to Bella because they sense she is a key figure in some upcoming event and forms a strong bond with her as a mate.
In 'bella gets hurt fanfiction', one possible scenario could be that Bella gets physically injured during a fight with a supernatural being, like a vampire. Another could be she gets hurt accidentally while exploring a dangerous place.
One possible plotline could be that Marcus discovers Bella's blindness and is initially hesitant about their relationship but then grows to see it as something that makes her unique and special. He might then become very protective of her.
One possible scenario is that Jacob reveals a secret that Bella doesn't like. This could make her feel betrayed and start to hate him.
One possible scenario could be that Bella meets a new vampire who has a very different charm from Edward. Maybe this new vampire is more carefree and shows Bella a different side of the vampire world that she becomes attracted to, leading her to cheat in the fanfiction.
For Bella, a nightmare could involve her not being able to control her vampire instincts and accidentally harming someone she loves, like her father or one of her human friends. This would be a huge source of distress for her. Carlisle might have a nightmare where the Cullen family is ostracized by the vampire community for some reason, like breaking an important vampire law. He would be devastated as he has worked so hard to build a harmonious existence for his family within the vampire world.
Power dynamics could also be a theme. The Volturi are powerful vampires, and Bella is a human. Their relationship would involve a complex power dynamic. Demetri would have to protect Bella from other threats, but also control his own vampire instincts. And Bella would have to find a way to assert herself in a relationship where she is physically weaker but perhaps emotionally stronger.
Power dynamics could be a theme as well. Depending on how their relationship is written, there could be a power struggle or a harmonious balance of power between them. Additionally, the theme of family and community might play a role. How do their respective vampire families or communities react to their being mates? This could add an interesting layer of conflict or support to the story.
One possible scenario is when Bella is more successful in achieving a common goal in the fanfiction world. For instance, if they are both after a magical artifact, and Bella gets it first. Another scenario could be that Bella has a closer relationship with a mentor figure, which Elena covets. It might also be that Bella has a more glamorous appearance and gets more admiration from other characters, making Elena jealous.
In some fanfictions, Bella might accidentally harm one of the Cullens, either physically or emotionally. This could lead to them hating her. Also, if she were to side with their enemies in a conflict, that would definitely make them dislike her. For example, if there was a feud between two vampire groups and Bella chose the wrong side, the Cullens would not be happy with her.