One possible storyline could be Bella struggling to hide her situation from Edward because she's worried about how he'll react. Maybe she tries to avoid him during that time, leading to some misunderstandings between them.
It can show her learning to accept her own body. In the Twilight series, Bella is often in extraordinary situations. Dealing with her period in a fanfic can be a more ordinary yet important aspect of her life, making her more relatable. By facing the physical and emotional challenges it brings, she can grow in self - awareness.
One reason could be to add drama. The 'Twilight' story, while having its own share of conflict, is fairly centered around the main love story. By introducing Bella cheating, it creates a whole new level of turmoil and can attract readers who like angsty and complex storylines. Another reason might be to explore different character aspects. Maybe the writer wants to show Bella's character in a more flawed light, breaking away from her rather idealized version in the original series.
One possible storyline could be Sakura still trying to carry out her Cardcaptor duties while dealing with the discomfort and mood swings of her period. For example, she might struggle a bit more during battles or have moments of self - doubt. Another could be her friends noticing a change in her behavior and trying to be extra supportive without fully knowing the reason at first.
Another aspect could be how Star's magical powers interact with this new physical change. Her emotions during this time could make her magic go a bit haywire, leading to some comical or challenging situations as she tries to control it. For example, she might accidentally turn things into strange menstrual - themed objects when she gets frustrated about her period.
One possible theme could be the exploration of Bella's character in a different light. Instead of the innocent and somewhat shy Bella from the original, she might be shown as more confident and in - control in this stripper role. Another theme could be the contrast between her new life as a stripper and her old life in Forks. There could also be themes related to society's perception of strippers and how Bella deals with that while still being part of the Twilight world.
There could be a storyline where Alice's dominance over Bella is a result of a premonition she has about Bella's future. So she becomes overprotective and starts dictating Bella's actions. For example, she might not let Bella go to certain places or meet certain people. This could lead to Bella feeling frustrated but also realizing that Alice might be right in the long run. It could also lead to a story where Bella tries to break free from Alice's dominance and in the process discovers something new about herself or the vampire world.
One possible storyline could be that Edward leaves due to his fear of endangering Bella and the unborn child. He might think that his vampire nature could bring harm to them, so he decides to distance himself to keep them safe.
One possible storyline could be that the hair tie is a memento from a special day. Maybe it was from a day she spent with a loved one, like Edward in the Twilight universe. The hair tie could be a symbol of a promise they made to each other, and throughout the fanfiction, she holds onto it as a reminder during tough times.
One interesting storyline could be Bella's relationship with Charlie from a different perspective. Maybe she discovers a long - lost family secret that Charlie has been hiding all along, which changes their dynamic in the Twilight universe.
A third storyline could be centered around Bella trying to change the Dark Lord. She could believe that there is good in him still and try to bring him over to the side of light. This would create a lot of internal conflict within the Dark Lord's followers and also put Bella in a very dangerous position as she tries to reform someone who is seen as inherently evil.