Let's say 'anal sister stories' could be about sisters supporting each other. There was a time when one sister was having trouble at school with a bully. The other sister stood up for her, talked to the teachers, and they worked together to overcome the situation. This kind of story shows the strong bond between sisters and how they can be there for each other in difficult times.
The sister could start to question her relationship with Bella. If Bella is being so forceful, the sister may wonder if Bella really respects her as an individual. She may also try to find ways to avoid the vampire fanfiction stuff, like making excuses or hiding when Bella tries to involve her.
It could be because of a misunderstanding. Perhaps there was a miscommunication or an incident where the sister was wrongly blamed for something, and Bella held onto that grudge. Say the sister accidentally broke Bella's favorite item but Bella thought it was done on purpose, which then festered into hatred in the fanfiction world.
No, it is completely inappropriate. Such topics are not suitable for a young child like your little sister. It may involve inappropriate or adult - related content that can be harmful to her mental and emotional development.
There were two novels that matched the plot of the princess and her sister. The first book was " The Group's Favorite Princess is a salted fish." In the story, the princess sister was a mischievous little cutie, and the emperor brothers doted on her very much. The second book was " The Group's Favorite Princess Is a Spirit." It also described the princess's mischievous sister being doted on by the emperor's brothers. These two novels might meet your needs. I hope you will like them.
Bedtime is usually associated with relaxation, sleep, and perhaps some calming bedtime stories like fairy tales or stories about friendship. The idea of it leading to an 'anal story' is quite far - fetched. It could only happen if someone was deliberately creating a very odd and inappropriate bedtime narrative for some strange reason, which is not the norm in regular bedtime routines.
There are a few novels that I can recommend to you. They tell the story of a younger sister helping her older sister take revenge. Among them," After the Female Lead's Mother Was Dressed " described the situation of the female lead, Lin Xiazhu, and her sister being forced by their mother and daughter to earn money. The sister was eventually framed and let down by her best friend, resulting in a miserable death. After she was reborn, she was determined to be a serious person and not let her sister have her way. In addition," Shen Jiaben " was a fantasy novel written by the Tang family's Third Young Master. The protagonist, Shen Shaohuo, embarked on a road full of thorns in order to take revenge. The plot of these novels is full of twists and turns, perhaps in line with your expectations of a younger sister helping her elder sister take revenge.