Family dynamics can also be a theme. Since the 'bella sister' part implies a family connection, there could be elements of how their relationship affects the family or how the family reacts to their relationship. And perhaps there are themes of self - discovery as they navigate their relationship and the events around them.
Romance is also quite prevalent. Writers may develop a relationship between Bella and Garrett, exploring how they fall in love, overcome obstacles in their relationship, and grow closer. It could be a slow - burn romance or a more immediate attraction - based one.
Friendship is also a prevalent theme. Bella often forms strong bonds with other characters. In some fanfictions, these friendships help her through difficult times or are the basis for her adventures. They add depth to the story and show different aspects of Bella's personality.
Another theme is adventure. Many fanfictions will put them in situations where they have to embark on a journey together. This could be to find a solution to a problem in the vampire community or to protect someone they care about. It gives a chance for their characters to develop and for their relationship to grow stronger in the face of challenges.
One common theme is heroism. Garrett is often depicted as a hero when he saves Bella. This could involve him using his vampire abilities in a very dramatic way to rescue her from a perilous situation.
A major theme is the idea of breaking away from the expected. In the Twilight series, Bella's relationships were mostly centered around Edward and Jacob. In fanfictions with Garrett, it's about her branching out. Also, there's often a theme of self - discovery. As Bella interacts with Garrett, she discovers new sides of herself. This can be seen in many such fanfictions where their conversations or experiences lead Bella to reevaluate her beliefs and desires. For example, in some fics, Garrett introduces Bella to a different vampire culture, which makes her question her understanding of vampires in general.
Some fanfictions might focus on emotional growth. Garrett and Andrew could be going through personal changes, and their relationship helps them to grow as individuals. This could involve dealing with past traumas or learning to trust others more.
I'm not sure of specific 'bella sister x garrett fanfiction' off the top of my head. But you can try searching on popular fanfiction websites like Archive of Our Own. They have a vast collection of fanfictions, and you might be able to find some by using relevant tags.
Common themes include the clash of two different worlds. Bella's sister comes from a human world, and the wolf pack has its own set of rules and culture. There's also the theme of friendship. Despite the differences, the sister can form deep friendships with the wolves. And then there's the theme of transformation, not just in a physical sense but also in terms of how the sister changes as a person due to her experiences with the wolf pack. She might become more confident, more assertive, and more in tune with her instincts.
Garrett might change Bella in terms of her courage. For example, he could be very bold and adventurous, and through their interactions, Bella becomes more like him, less afraid to take risks. He might take her on various escapades that force her to step out of her comfort zone, gradually making her a more fearless person. In addition, his unique perspective on relationships could also influence Bella. If Garrett has a more carefree and open approach to friendships and alliances, Bella could start to adopt some of those traits, becoming more open - minded in her interactions with others.
A common theme is the power of sisterhood. The stories often show how Bella and her wolf sister support each other through tough times.