Well, Mabel is a very resourceful girl. She could start by befriending some of the minions that Bill has under his control. By showing them kindness and a different way of life, she could turn them against Bill. Then, with their help, she could find a portal or a way to get back to her world. Also, Mabel's strong will and her ability to think outside the box could lead her to discover a hidden power within herself that can nullify Bill's kidnapping attempt.
Mabel could escape by using her grappling hook. She always has it with her and could use it to swing away from Bill when he's not looking.
One possible plot could be that Bill takes Mabel to his dimension. There, Mabel has to use her wits and creativity to outsmart Bill. Maybe she befriends some of the strange creatures in Bill's realm who help her in her escape plan.
A fanfiction might involve a love triangle between Human Bill Cipher, Mabel, and Dipper. Human Bill Cipher, with his manipulative ways, tries to win Mabel's love. Mabel is flattered by his attention but is also conflicted because of her strong bond with Dipper. The story could explore themes of jealousy, loyalty, and the power of true friendship as Dipper tries to protect Mabel from Bill's schemes.
A 'bill cipher x mabel fanfiction' could explore a really strange and interesting relationship. Bill Cipher is this super - chaotic and powerful entity, while Mabel is full of charm and innocence. In fanfiction, it might show Bill trying to manipulate Mabel in his devious plans, or perhaps Mabel finding a way to outwit Bill in some unexpected way. It could also delve into how their different natures interact, like Bill's lack of morals against Mabel's strong sense of right and wrong.
One possible fanfiction could be where Bill Cipher tries to deceive Mabel in a different way than in the show. Maybe he appears to her in a dream, offering her the world's greatest collection of sweaters in exchange for a small favor that's secretly a big deal. But Mabel, being clever, starts to suspect his motives and tries to outwit him using her unique charm and creativity.
One interesting 'Bill Cipher x Mabel' fanfic could be 'The Strange Bond'. It explores a unique relationship between them where Bill tries to understand Mabel's world in a rather warped way. It has some really creative scenarios.
In such a fanfic, Bill Cipher might try to trick Dipper and Mabel. He could offer them false knowledge or tempt them with strange powers. Maybe Dipper would be the first to suspect Bill's motives, while Mabel might be more easily swayed by his charm at first.
Their relationship could develop through shared secrets. For example, Mabel discovers a secret about Gravity Falls that only Bill also knows. This creates a bond between them as they keep this knowledge from others.
Well, in this type of fanfiction, there are numerous possible plot developments. For example, Mabel might discover some hidden power within herself while being kidnapped by Bill. This power could be the key to her escape or to ultimately defeating Bill. Or, Bill could be using Mabel to access a different dimension or unlock some ancient mystery in Gravity Falls. And the Pines family, along with their allies, would then have to race against time to save Mabel and prevent whatever Bill's evil plan is. There could also be a lot of psychological warfare between Bill and Mabel, with Bill trying to break her spirit and Mabel remaining strong and defiant.
One way a fanfiction could go is that Bill Cipher is actually trapped in a form that only Mabel can see. He needs her help to break free, but Mabel is hesitant. She doesn't trust him at all. Bill Cipher then tries to convince her by showing her glimpses of things she desires, like the future with all her friends happy and her having amazing adventures. But Mabel has to decide if she can really trust Bill Cipher or if it's all just a trick.
In 'bill cipher x mabel fanfiction', the plot device of the 'deal' is often used. Bill is known for making deals, and he might make one with Mabel. This could lead to all sorts of consequences and moral dilemmas for Mabel. Another common plot device is the 'alternate reality'. The fanfiction could take place in an alternate reality where Bill and Mabel have different relationships or roles. For example, they could be partners in crime in a world where chaos is the norm, or Mabel could be the only one who can see Bill and has to keep it a secret from everyone else.