One common theme is acceptance. Since Bella is human and Esme is a vampire, there's often a story arc about Esme accepting Bella into her family fully. Another theme is protection. Esme always wants to protect Bella from the dangers of the vampire world.
There's also 'Esme and Bella: A New Family'. In this fanfiction, it delves deep into how they build a mother - daughter relationship from scratch. It shows Esme teaching Bella about the vampire way of life while also having those motherly conversations that are really touching. It's a great read if you like character - centric stories.
In this fanfiction concept, it would completely change the dynamics of the Twilight story. Bella being Esme and Carlisle's daughter would mean a different kind of family relationship within the Cullen family. For example, her relationship with Edward would be that of siblings rather than lovers. It could also lead to different story arcs regarding her powers and how she fits into the vampire world. There could be new conflicts and alliances based on this new family connection.
The story would change a great deal. For starters, Bella's initial perception of vampires would be different as she would grow up with Esme, a vampire. She might not be as scared or intrigued by them. Also, the Cullen family dynamics would shift. Esme would be more protective of Bella within the family, and there could be less of the initial mystery and tension between Bella and the Cullens. Edward's relationship with Bella might also develop differently, as Esme would play a more direct role in their interactions.
Well, a possible plot could be that Esme, being Bella's mother, has a secret past that she reveals to Bella as she grows older. This past could be related to a different vampire clan or some magical ability that Esme has been hiding. It could also show how Bella reacts to this new information and how it changes their relationship. Maybe Bella then wants to explore this part of her mother's past and gets into some adventures along the way.
The plot could center around Bella's role in the Cullen family's relationships with other supernatural beings. As Esme and Carlisle's daughter, she has a certain status. She could try to bridge the gap between the Cullens and the werewolves in a more official capacity. This could involve her facing opposition from within her own family as well as from the werewolves, but she perseveres in her attempts to create peace.
At first, it would be a bit awkward as Bella adjusts to her new life. But Carlisle would be very patient and understanding, like a father figure. Esme would be more of a motherly presence, always there to comfort Bella. As time goes on, they would become closer. Carlisle might teach Bella about the vampire history and ethics, and Esme would share her love for the family and home. Eventually, they would have a very strong, loving bond.
One great fanfiction is 'The Cullen Family Bonds'. It beautifully explores the relationships between Carlisle, Esme, and Bella. It shows how Carlisle's wisdom and leadership in the family interact with Esme's nurturing nature, and how Bella fits into their world. It has some really touching scenes that make you feel like you're part of the Cullen family.
One common theme is family. Since Esme is part of the Cullen family and Bella becomes part of it too, many fanfictions explore their family - like bond.
One common theme is family. Since they are all part of the Cullen family in the Twilight universe, many fanfictions explore how they interact as a family unit. For example, how Carlisle and Esme act as parental figures to Bella.