One interesting Bella can't talk fanfiction could be about how she communicates through sign language instead. In this type of story, her friends and family would have to learn to understand her new way of communication, creating a lot of heartwarming and challenging moments.
You can try looking on fanfiction platforms like Archive of Our Own (AO3). It has a vast collection of fanfictions, and you can use the search function to specifically look for 'Bella can't talk' fanfictions. Just type in the relevant keywords, and it should bring up a list of stories.
Well, there could be various reasons. Maybe the writer wants to create a unique situation where Naruto is silent to add mystery. For example, if the fanfiction is set in a scenario where Naruto has lost his voice due to a curse or some kind of magic. It could also be that the author is focusing on other characters' reactions to Naruto's silence, which can bring out different aspects of their personalities.
Her partner could be a main character. He would play an important role in how Bella copes with the situation. They could have deep conversations about their future together and support each other through the emotional turmoil.
One interesting point could be how they express their love in a more unique way compared to the original story. Maybe in the fanfiction, they have deeper conversations about the nature of their love, like how it endures through different challenges.
They might discuss how their exes influenced their view of relationships. For example, Edward could talk about how his past experiences made him more cautious, while Bella might share how her exes' lack of understanding led her to value Edward's empathy more.
One interesting plot development could be that Naruto has to find alternative ways to communicate his thoughts and feelings. For example, he might use sign language or write notes. This would change the dynamics of his relationships as his friends would have to learn to understand him in a new way.
Edward could be an interesting character to pair with her. If Bella is a non - human, their relationship would take on a whole new dynamic. For example, if she's a mermaid, Edward, as a vampire, would have to deal with the differences in their species. Another good character could be Jacob. If Bella is some kind of supernatural being, Jacob's wolf nature could create a complex relationship with her, full of loyalty and conflict.
It could be that she simply wants to keep her real relationship with Edward private. Fanfictions might make her feel like her relationship is being overly exposed or misrepresented. For example, some fanfictions might add in elements that she finds uncomfortable or not true to their actual connection.