There could be a human organization that is aware of the existence of vampires and sees Bella as a way to get to the Cullens. They might try to frame the Cullens for kidnapping Bella in order to get the public on their side and then use Bella as bait to draw out the Cullens and destroy them. So this human organization would be the main antagonist.
It could be another vampire clan. Maybe they are jealous of the Cullens' interest in Bella or they think that Bella's presence among the Cullens will disrupt the balance of power among vampires. So they try to get Bella from the Cullens, making them the main antagonists.
In the 'the cullens kidnap bella fanfiction', it could be that the Cullens have some hidden motives. They might believe that Bella has a special power or connection that they need to study or keep safe. So they take her against her will, which then leads to a complex relationship dynamic between Bella and the Cullens as she tries to figure out what they really want.
Obviously, Bella and the Cullens are the main characters. Bella is the human girl who enters their world. And the Cullens include Edward, who has a special connection with Bella. Then there's Alice, who might be able to see the future and could play an important role in Bella's interactions with the family. And of course, Carlisle, the head of the Cullen family.
She might start by giving them the silent treatment. Just ignoring them completely when they try to talk to her, which would be a very human way of showing anger.
Well, it could be due to the way the Cullens interact with the other people in Forks. If Bella notices that they are being manipulative or using their powers in a way that she doesn't like to influence the townspeople, that could make her start to hate them. Also, if there is some kind of power struggle within the Cullen family that starts to affect Bella negatively, like she gets caught in the middle of it or she sees how it's causing harm to those she cares about, she might turn against them.
In some fanfictions, the Cullens might hate Bella because of jealousy. Maybe other vampires are jealous of the attention she gets from Edward. Another reason could be that she brings too much danger to their family. Her presence could attract unwanted attention from other vampires or vampire hunters, which puts the Cullens at risk.
Yes, it is quite common. Fanfiction writers often use this scenario to explore the relationship between Bella and the Cullens. It gives an opportunity to show the Cullens' caring side towards Bella.
It could be that the fanfiction writer took a different approach to the story. In some fanfictions, the Cullens could be involved in situations that go against what Bella stands for. Perhaps they are written to be more secretive and untrustworthy, leading to Bella's hatred.
I'm not sure specifically as there could be many different takes on it. Generally, it might be about Bella using her singing in a context related to the Cullen family in a fan - created story.
The main characters are Bella and the Cullens. Bella is a human girl who is in a relationship with Edward Cullen, a vampire. The Cullen family includes Carlisle, Esme, Alice, Jasper, Rosalie, and Emmett.
The Cullens might be shocked at first. If Bella's secret is something really unexpected like she has a hidden power, they will need some time to process it. They could be initially speechless.