Another theme could be the challenges they face together. The service dog might have to deal with unfriendly people or difficult environments while trying to protect and assist Bella. This can create a lot of tension and interesting plot points in the fanfiction.
A common theme is the bond between Bella and the service dog. It's often about how they grow to trust and rely on each other. For example, the dog might be there for Bella during her lonely moments.
I'm not sure of a specific 'bella has a service dog' fanfiction off the top of my head. But you could try looking on FanFiction.net. Sometimes, fanfictions in this vein focus on how the presence of the service dog changes Bella's relationships. For example, it might make her more confident in social situations, which in turn affects how she interacts with her friends or family. It could also be a source of comfort during difficult times in the story's plot.
One common theme could be the discovery of her new identity. Bella realizing she is a dog shifter and coming to terms with it. Another might be the relationship between Bella and other characters in this new context. For example, how her friends or family react to her transformation.
A theme that might show up is family. Maybe they are part of a bigger animal family or they create their own little family - like unit. There could be stories where they face challenges as a 'family' and work together to overcome them. Additionally, themes of growth and self - discovery can be present. As they interact with each other and the world around them, they might learn more about themselves and grow as characters.
One common theme is acceptance. The stories often show Bella's journey towards being accepted for who she is, autism and all. Another theme could be her special talents or interests that are sometimes associated with autism, like a deep focus on a particular subject.
The theme of self - discovery is also present. When facing cancer, Bella might start to question who she is and what she really wants in life. This journey of self - exploration can be a central part of the fanfiction. Also, the struggle with mortality is a theme. She has to come to terms with the fact that she might not have a long time to live, which makes every moment more precious.
In many 'bella has wings' fanfictions, the theme of transformation is prevalent. Not just the physical transformation of getting wings, but also an internal transformation. Bella might become more confident, more assertive. There's also the theme of adventure, as she uses her wings to explore new places and have new experiences.
One common theme is the struggle. Bella struggles with the physical and emotional aspects of the disease. Another theme is the support system, like how her friends and family either help or sometimes fail to understand her situation.
Family loyalty is a common theme. The brother will often go to great lengths to protect Bella, showing the strong bond of family. For example, he might face off against her enemies without hesitation.
A common theme is self - empowerment. Bella is often portrayed as taking control of her own life. For instance, she might make decisions about her relationships without being overly influenced by others.
Well, often there's the theme of hope. Despite having ovarian cancer, Bella in the fanfiction might hold on to the hope of getting better. There could also be a theme of self - discovery. As she battles the cancer, she might learn more about herself, her strength, and what truly matters in life. For example, she may realize the importance of living in the moment and cherishing relationships more.