It's hard to say for sure without reading the specific fanfiction. It could be that the three taps are a symbol of something significant between them, like a hidden message or a way to communicate in a unique way in the magical world the author has created.
It could be a gesture of affection or a way to start a conversation. Sometimes in fanfictions, small actions like this have deeper meanings related to the plot or character development.
Maybe she's trying to get his attention or has something important to tell him.
Harry Potter dominates Ginny fanfiction perhaps because of his overall importance in the 'Harry Potter' universe. His character is multi - faceted, with his struggle against Voldemort, his friendships, and his growth. Ginny is an important part of his life, especially romantically. Fans are drawn to write about them together because their relationship is a key part of the series. Also, the popularity of Harry means that any story related to him, including those with Ginny, will likely attract more readers, so writers are more inclined to focus on him in Ginny - related fanfictions.
Maybe in that fanfic, Harry faces extreme hopelessness and feels there's no way out of his difficult circumstances, leading to the attempt.
Maybe it's because Severus wants to show his hidden care for Harry. Or it could be part of a larger plot to protect him from some unknown danger.
Maybe she hates it because it often distorts the real story and characters. Fanfiction might create out - of - character situations for her or Harry, which she can't stand as she values their real relationship and the original story so much.
In some fanfictions, Harry might leave because of Ginny due to a misunderstanding. For example, he could misinterpret Ginny's actions or words as a sign that she no longer loves him or wants him around. This could be something as simple as seeing her chatting happily with another guy and jumping to the wrong conclusion.
It could be that the fanfiction writer wants to create a more complex or angsty plot. By having Ginny reject Harry's love, they can explore themes like unrequited love, personal growth, and the characters having to face unexpected emotional challenges. Ginny may have her own personal goals or insecurities that make her push Harry away, like fearing she'll lose her own identity if she gets too involved with the famous Harry Potter.
Maybe the writer wants to create a unique plot twist. In some fanfics, authors like to deviate from the original relationship to explore different character dynamics.
Well, perhaps Ginny is obsessed with Harry fanfiction because she has a deep connection to Harry in the original story. Fanfiction allows her to explore different scenarios and relationships that might not have been fully explored in the official books. It could also be that she simply loves the idea of Harry so much that she wants to read all the different interpretations of him in fan - created stories.