It could also be related to some prophecy or ancient vampire lore. There might be a prophecy that Bella is a key figure in some upcoming event, and Aro wants to be in control of that situation. So, he sends Jane to kidnap her to ensure he can manipulate the outcome according to his will.
Maybe it's out of envy or fear. If Bella is somehow important to Edward and the Cullen family, Aro, who has his own power - hungry desires, might want to use her as a pawn to control or harm the Cullens. He could be envious of their influence or fear their growing power.
Bella would probably be terrified. She's just a human (assuming she hasn't been turned yet in the fic) and Jane has that ability to cause intense pain with her mind. Bella might initially freeze in fear, not knowing what to do.
One possible plotline could be Bella's friends and the Cullens coming together to rescue her. They might plan a stealthy infiltration of Aro's lair, using their unique abilities. For example, Alice could use her visions to anticipate Aro's moves and find the safest way in.
Alice could be a crucial hero. Her ability to see the future could help in planning the rescue. She could foresee any traps or ambushes set by Aro and guide the others to avoid them. Also, her friendship with Bella would make her determined to save her from Aro's clutches.
One possibility is that there would be a huge rift between Bella and the Cullens. Since Edward was her previous love interest, this new situation would be extremely difficult for them to accept. And it would also make the Cullens' relationship with the Volturi even more complex.
Another plot twist could be that Aro has some grand plan for Bella that goes against what she wants. For example, he might want her to marry a certain vampire from his coven to strengthen their family's power, but Bella is in love with Edward. This would create a huge conflict between her loyalty to her new - found family and her love for Edward and the Cullens.
Well, it could be that Bella, in a different turn of events, discovers a side of Aro that she didn't expect. Maybe she sees his vulnerability when he's not in his usual powerful role. This unexpected discovery could lead to a slow - burning attraction between them, despite their different natures.
One common theme is the exploration of power dynamics. Aro is a very powerful vampire and Bella has her own unique allure and power, so how they interact in terms of power is often explored.
Well, in some fanfictions, 'bella kills aro' could be part of a larger story arc where Bella has gained new powers or is trying to protect someone or something she loves. It could be that Aro has become a threat to her family or friends in the fanfiction's unique universe, and she decides to take matters into her own hands.
One key element is the power dynamic. Aro is a powerful vampire and Bella has her own allure. Their relationship often plays around this power imbalance. For example, in many stories, Aro is drawn to Bella's unique mind which he can't fully read. This creates an interesting tension.
This kind of fanfiction concept is really out - of - the - box. If Bella is pregnant with Aro's baby, it might introduce a new power or a new type of vampire - human hybrid. The story could focus on the pregnancy itself, like how Bella copes with the physical and emotional changes. It could also show how the baby might grow up in a world full of vampires and werewolves, and what kind of impact it would have on the existing power balance in that fictional universe.