One common theme could be friendship. Since Bella is Kate's mate, their relationship might be explored in terms of how they become friends and support each other. Another theme could be adventure. They might go on some sort of journey together in the story.
Common themes in 'bella is kate's mate fanfiction' might include loyalty. Their bond as mates would likely involve a deep sense of loyalty. Also, self - discovery. Bella might discover new aspects of herself through her relationship with Kate. And perhaps there could be a theme of family, either their own or the family - like bond they form with each other and other characters in the story. This can add depth and complexity to their relationship.
Family can also be a theme in bella and kate fanfiction. Sometimes their family relationships are explored, like how their families influence their actions and decisions, or how they support each other in the face of family - related issues.
In 'bella is emmett's mate fanfiction', a frequent theme is the transformation of relationships. The friendship between Bella and the other Cullens would shift. For instance, her relationship with Rosalie would be very different as Emmett is Rosalie's mate in the original. There could also be a theme of new beginnings. It's like starting a whole new 'Twilight' - like story but with a different romantic core, which gives the writer a lot of room to explore different plot directions.
Love against all odds is a big theme. Their bond as mates in the fanfiction usually has to overcome various obstacles. It could be differences in their personalities, or external forces like rivalries or family expectations. Also, the theme of transformation is common. As they get closer, they might change each other in positive ways, like becoming more confident or more understanding.
One common theme is the discovery of love. Bella and Godric often have to figure out their feelings for each other. Another theme is the struggle against society's expectations. Their relationship might not be accepted by all in their world. And power is also a theme, as Godric usually has a certain amount of power, and Bella's role as his mate might change her relationship with power as well.
One common theme is the exploration of a new relationship. Since Bella and Eric are not mates in the original, it's all about how they come to be mates in the fanfiction.
One common theme could be love and loyalty. Since they are mates, the story might revolve around their deep love for each other and their loyalty in the face of difficulties.
Friendship is a common theme. Even though they are mates, it often starts with a sense of friendship growing between them. Another theme could be loyalty, as they support each other through various situations in the fanfiction.
One common theme is friendship. Since Kate and Bella don't have a very straightforward relationship in the original work, fanfictions often explore how they can become friends. Another theme is protection. Kate being a powerful vampire can protect Bella from various threats.
One common theme is the struggle against their different natures. Jasper has his violent past as a vampire, while Bella is a human. Fanfictions often explore how they deal with this difference.
Power is a common theme. Since Voldemort is a very powerful dark wizard and Bella is his devoted follower, their relationship in fanfiction often revolves around power sharing or Bella gaining power through her connection to Voldemort.