The plot could potentially start with Bella stumbling upon Paul in a rather downcast state. Paul might be mopey due to his unrequited love for someone, or perhaps his conflict with the vampires in the area. Bella, being the kind - hearted person she is, decides to step in. She could start by simply listening to Paul's problems, which is something not many in the Twilight world might do for him as he's a werewolf. As she listens, she realizes the root of his mopey behavior. Then, she uses her knowledge of the Twilight world, her relationships with both vampires and werewolves, to help Paul. Maybe she arranges a meeting between Paul and some of the more friendly vampires to ease the tension, or she gives Paul advice on how to win the heart of the person he loves. Through her actions, Paul slowly starts to come out of his mopey state and become a more positive character in the fanfiction.
Well, Twilight fanfiction is quite diverse. In general, if you're looking for a story where Bella helps a mopey Paul, it might involve Bella using her empathetic nature. Maybe she tries to understand Paul's problems, like his struggle with being a werewolf in the Twilight universe. However, without actually finding the specific fanfiction, it's hard to say exactly what would happen in it. But it could be a really interesting take on the characters and their relationships.
Maybe Paul is having trouble controlling his werewolf side and Bella, with her knowledge of the supernatural world, tries to help him. For example, she could use her connection to the Cullens to find a way to soothe Paul's inner turmoil.
I'm not sure of a specific 'bella helps a mopy paul twilight fanfiction' off the top of my head. But you can try searching on popular fanfiction websites like Fanfiction.net or Archive of Our Own. They have a vast collection of Twilight fanfictions and you might find one with that plot there.
One possible plot could be that Bella discovers she has the ability to transform into a white wolf early on, before she gets involved with Edward. This changes her relationship with Jacob and the werewolf pack as they now see her as one of their own. She might have to deal with the challenges of being a wolf, like protecting the tribe from new threats while also trying to figure out her feelings for Edward, who is now a part of a different supernatural world.
Another theme is the transformation of Paul's character. Often, in these fanfictions, he starts out as a rather rough or wild character, but through his relationship with Bella, he becomes more gentle and understanding. For example, in some stories, he learns to control his temper better. The third common theme is the idea of a different kind of pack dynamic. With Bella being involved with Paul, it changes the way the pack views her and also how they interact with Paul. It can create some interesting power struggles and alliances within the pack.
One possible plot could be that Bella discovers the Cullens are homeless for some reason, perhaps they've been run out of their home by a new vampire threat. Bella then uses her connections in the town and her knowledge of the area to find them a safe place to stay. She might also help them gather resources, like getting blood from a hospital in a discreet way.
One possible plot is that Bella, feeling trapped in her life between the vampires and werewolves, uses the scissors as a tool for self - discovery. She starts using them to create art, like cutting out paper shapes that represent her different relationships. As she does this, she begins to understand her place in the Twilight world better and makes decisions about her future with Edward or Jacob based on her new - found self - awareness.
One popular one might be those that explore an alternate universe where Bella and Paul form an unexpected alliance against a new threat in Forks. It could be interesting to see how their different personalities interact outside of the typical Bella - Edward - Jacob triangle.
There's no way to know for sure without reading the fanfiction. It could be something traditional like James or something more unique like Orion.
One common theme is the struggle between different supernatural worlds. Since Paul is a werewolf and Bella is involved with vampires, there's often a theme of conflict and coexistence.