She could be kidnapped by one of Batman's enemies to get to him. This would put Bruce in a difficult situation where he has to balance his need to save his daughter and his vow not to kill his enemies. It would also show her strength as she tries to escape on her own terms.
The fanfiction could explore her relationship with Alfred. Since Alfred has been like a father figure to Bruce, he could play an important role in her life as well. She might confide in him about her dreams and fears, and he could give her advice on how to deal with the unique situation of being Bruce Wayne's daughter in a dangerous Gotham.
Maybe she has special powers that she has to keep hidden from the world. In the context of Batman Begins, this could add an interesting layer as she has to navigate her life while also being related to a vigilante. Her powers could be a source of both good and a potential threat if they are discovered.
One possible fanfiction could be about Bruce's daughter growing up in the shadow of her father's legacy. She might struggle with the expectations placed on her and try to carve out her own identity. For example, she could have a different approach to fighting crime, perhaps focusing more on prevention through community work rather than donning a costume like Batman.
One common storyline is her training to become a hero. She has to learn from Bruce how to fight, use gadgets, and be stealthy. Another is her facing off against villains who target her because she is Batman's daughter.
Maybe the daughter discovers a secret conspiracy in Gotham that involves both her parents' past enemies. She has to use her unique combination of skills, like Batman's detective work and Catwoman's acrobatic abilities, to uncover the truth. Along the way, she forms her own team of allies, some from the side of the law and some from the fringes.
Maybe Arabella discovers Bruce's plan to become Batman before he's fully committed to it. She tries to talk him out of it, fearing for his safety, but eventually realizes it's his destiny and decides to support him in a more behind - the - scenes role, like managing his finances for his vigilante activities.
She could be a source of emotional support for Bruce. In the movie, Bruce is often alone in his journey, but with a sister, she could be there to comfort him during the tough times, like after his parents' death.
Bruce Wayne in Batman Begins fanfiction is often a complex character. He is a man on a journey of self - discovery and vengeance. In fanfiction, we might see different aspects of his training that were not fully explored in the movie. For example, his time with Ra's al Ghul could be delved into more deeply, showing his internal struggle between the teachings of the League of Shadows and his own moral code.
Perhaps in the fanfiction, Bruce's sister could have her own set of skills. For example, she could be a brilliant scientist who helps Bruce develop some of his gadgets for Batman. She might be the one who figures out how to make the Batmobile more efficient or the Batsuit more durable.
One idea could be that the OC is a childhood friend of Bruce's who has a unique skill, like being an expert in ancient martial arts from a far - off land. They could influence Bruce's training and view on justice in a different way. For example, they might introduce him to more spiritual aspects of combat and self - discovery.
One possible storyline could be exploring the immediate aftermath of Bruce's death. How does Terry McGinnis handle the loss? Another could be flashbacks to Bruce's final days, showing his last words of wisdom to Terry.
She can also be portrayed as a symbol of hope in Gotham. In some fanfictions, her presence brings a new dynamic to the city. She might inspire other young people to stand up against crime. Her character could have a more empathetic side compared to Bruce, reaching out to the victims of crime in a way that Batman doesn't always do.