A plotline could involve Bella's family's reaction to her relationship with Emmett. Given her blindness, they might be even more worried about her getting involved with someone like Emmett. Also, the fanfiction could show how Bella and Emmett communicate on a deeper level. Since she can't see, they might develop a stronger telepathic or emotional connection that is unique to their relationship.
One possible plotline could be that Marcus discovers Bella's blindness and is initially hesitant about their relationship but then grows to see it as something that makes her unique and special. He might then become very protective of her.
I'm not sure which specific 'bella is blind and emmett's mate fanfiction' you are referring to. There could be many different takes on this concept in the fanfiction world. Some might explore how Bella's blindness affects her relationship with Emmett, perhaps adding a layer of vulnerability and a different dynamic to their bond compared to the original story.
A possible plotline could be that Bella's new status as Emmett's sister makes her more confident in the vampire world. Since Emmett is a strong and outgoing vampire, he might teach Bella how to better use her vampire abilities if she were to become one in the story. This could lead to her getting involved in more dangerous situations but also growing as a character.
Well, perhaps they discover they are siblings after some long - lost family mystery is unraveled. As they adjust to this new reality, they might face jealousy from other members of their coven. And for the 'lemon' part, it could be that there are some intense emotional moments between them that border on inappropriate feelings, which they have to overcome as they realize the importance of their family connection. Maybe they are in a situation where they are forced to rely on each other in a very close way, and those feelings start to develop, but they know it's wrong because they are siblings.
A plotline might involve Bella having to choose between different aspects of her relationships with Jasper and Emmett. For example, Jasper could offer her a more cerebral and controlled relationship, while Emmett might represent a more passionate and physical connection. Also, they could all be on a journey to discover more about the origin of their unusual mating bond.
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.
One possible plotline could be that Emmett, as Bella's landlord, is very protective of her. Maybe he notices some strange things going on in the neighborhood related to the vampire - human world in Twilight, and he tries to keep Bella safe without revealing his own true nature (if he's a vampire in the fanfic).
One possible plotline could be the struggle against other vampires who oppose their relationship. Another might be Bella adjusting to the vampire world in a different way than in the original stories, with Damon as her guide. Maybe they go on adventures together to protect their relationship from various threats.
A possible plotline could be that Bella's sister is initially in danger, and Carlisle saves her. This event sparks their connection. Then, they start to secretly meet, trying to hide their relationship from both the human world and the Cullen family. Another plotline might be that Bella's sister has a special power that attracts Carlisle, and they explore their relationship while trying to figure out what this power means for them.
Yes, there are some out there. You can try searching on popular fanfiction websites like FanFiction.net or Archive of Our Own. Just type in the key phrase 'bella is rosalie and emmett's mate' in their search bars and you'll likely find several stories. Some might be more to your taste than others, depending on the writing style and plot twists the authors have come up with.