Her partner could be a main character. They would be deeply affected by her death and would likely have to take on a lot of responsibilities, especially in terms of raising the baby. The baby itself could also be considered a main character in a sense, as the story could follow its growth and development in the absence of its mother.
Bella's mother or a close female friend could also be main characters. Her mother could share her own experiences of giving birth and offer practical advice. The close female friend could be there to hold Bella's hand, offer comfort, and maybe even crack a few jokes to lighten the mood during the intense moments of the birth.
The baby, of course. Growing up without a mother would be a huge part of the story. The father would also be deeply affected, having to raise the child alone and deal with the grief of losing his partner.
One possible plot could be that the story focuses on the grief of those left behind, like her partner. They might struggle with the sudden loss and have to figure out how to take care of the newborn without her. Another plot could involve the backstory leading to her death, perhaps there were complications during the birth that no one saw coming. And it could also show the impact on the community around her, how they come together to support the family in this difficult time.
One possible scenario could be that there were complications during the birth that couldn't be overcome. Maybe there was excessive bleeding or an undetected health issue that led to her death.
Well, it could be about the challenges Bella faces during the birth, like the pain and fear. Maybe it also shows the support she gets from her family or friends around her.
The Cullen family usually plays a significant role. Carlisle, with his medical knowledge (even if it's vampire - related in the Twilight context), might be involved in ensuring a safe birth. Alice could be there, perhaps using her gift to foresee any potential problems during the birth. Even the other members of the Cullen family would be around to offer their support in different ways.
Perhaps the Cullen family has to deal with the shockwaves of Bella's death. They may face challenges from the vampire community as Renesmee is a unique being. Some vampires might see her as a threat or an abomination. The family would then have to protect Renesmee at all costs while also mourning Bella.
There could be Bella's partner in the relationship she is betraying. This character might be a loving and trusting person, which would make Bella's affair even more complicated and morally wrong.
The truck itself could be considered a main character in a sense. It has its own presence and significance in the story.
If it's a more modern - day or non - supernatural setting, Bella's parents could be main characters. They might be overjoyed at the birth of their grandchildren and be actively involved in their upbringing. They could provide financial support or just be there for emotional support for Bella, especially during the tough early days of raising twins.