Well, with Edward, their relationship would be completely different. Instead of the love - hate dynamic they sometimes have in the original, it would be pure hatred. She would probably avoid him at all costs. As for the other Cullens like Alice, who was friendly with Bella in the original, their relationship would turn sour. Bella would no longer trust Alice's visions or her attempts to befriend her. And with Carlisle, who was respected by Bella in the original, she might now view him as the head of a family she despises and be very cold towards him. Overall, all her relationships with the Cullens would be hostile, and she would likely look for new allies outside of their circle.
Her relationship with Jacob would likely change. Since she hates the Cullens, she might turn more towards Jacob for support. They could become closer as she sees Jacob as an alternative to the Cullen world. With her human friends, she might try to distance herself from any connection to the Cullens. So, she could be more secretive or withdrawn from them as well to avoid any talk about the Cullens.
Well, at first, the Cullens might be more suspicious of Bella since she's related to James. But as they get to know her better, they might see that she's different from her brother.
It would change everything. In the original story, Bella is drawn to the Cullens on her own. But if Victoria is her mother, Bella might be more reluctant to be around them because of her mother's enmity towards them. The Cullens would also be very cautious. Edward, for example, might not be as quick to fall in love with Bella. There could be a lot of suspicion and mistrust on both sides, and Bella would be in the middle, trying to understand her new role in this complex situation.
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.
It completely flips the perception. Instead of the loving Edward, we see a hating one. It makes Bella seem less desirable perhaps. Fans who read this fanfiction might start to view Bella as someone who has done something wrong to make Edward hate her, changing her from the love - interest to a more complex, possibly unlikable character.
It would become more intense and complex. Jacob would be very protective, his werewolf instincts kicking in fully. He'd be constantly worried about Bella and the baby's safety.
It changes drastically. Usually, the trust is broken. Bella may become very guarded and distant towards Damon.
One possible reason could be that she discovers some dark secrets about the Cullens. Maybe she finds out they have been lying to her about their true nature in a more malicious way than in the original story. Another reason might be that she feels threatened by their vampire powers. If they accidentally or purposefully use their powers around her in a menacing way, it could make her feel scared and turn that fear into hatred.
Well, it becomes more platonic. There's no romantic tension between them like in the original. Instead, there could be a sense of loyalty and family - based love.
In this fanfiction, the relationship between Bella and Edward is turned on its head. Bella's role is now to shape Edward's character from a young age. Their interactions will be less about the intense passion of the original story and more about the tender, sometimes difficult, bond between a mother and son. She might worry about his future, his choices, and his safety in a way that is very different from the love - based concerns in the original narrative.
At first, their friendship might start out tentatively. They have had their differences in the original Twilight story. But as the fanfiction progresses, they start to understand each other better. Leah might open up more about her own insecurities and past traumas, and Bella, in turn, shares her own fears about being involved with vampires.