Well, it could be possible through some creative plot twists. Maybe there was a powerful spell that altered memories or time. In fanfics, authors often bend the rules of the original universe to create unique scenarios.
Perhaps in this fanfic, the magical world faced a great threat that required a special bond between Harry and Susan. To create this bond, the author made Harry her father. It could be related to some kind of magic inheritance. Susan might have needed Harry's unique magical abilities or his status as the Boy Who Lived to gain protection or special powers. Also, it could be a result of a cross - dimensional or time - traveling incident where Harry's actions in a different time or dimension led to him being Susan's father in an alternate reality.
A fanfic that stands out is 'Susan Bones: The Unseen Heroine'. It focuses on Susan's unique perspective during the events at Hogwarts. She has her own investigations into the mysteries around the school, especially those related to the Dark Lord's return. The author does an amazing job of portraying her intelligence and courage, which are often overlooked in the original series.
In fanfiction, the rules can be bent. It might be due to some new magical potion or artifact that had an unforeseen effect on Fem Harry Potter. Writers often take creative liberties to come up with unique and sometimes out - of - the - box scenarios like this one.
One possibility could be through a powerful and misfired spell. Maybe a spell that was intended for something else, like a transfiguration gone wrong during a complex magic experiment in Hogwarts. For example, if a spell was being tested to enhance learning abilities by temporarily taking on the mental characteristics of a top student, it could have accidentally caused a full physical and mental transformation into Hermione.
In the original Harry Potter series, Harry would never kill Dumbledore as they had a strong bond. However, in fanfiction, the author might rewrite the story by having Harry be under the influence of a powerful dark magic or a powerful mind - controlling spell that forces him to do so. Another possibility could be a huge misunderstanding where Harry thinks Dumbledore has turned evil and poses a great threat to Hogwarts and the wizarding world.
Another possibility is that there is some sort of personal misunderstanding between them. Maybe Susan Bones accidentally reveals one of Harry's secrets or makes a wrong assumption about him in public, which embarrasses Harry and leads to his hatred. Also, it could be that her family background or family connections play a role. If her family has some past issues with Harry's family or friends, it might fuel Harry's negative feelings towards her.
Well, in many fanfictions, Susan Bones might use her knowledge of the wizarding world's lore. Since she comes from an old wizarding family, she could share some secrets that help Harry in his fight against Voldemort. For example, she might know about some hidden magical artifacts or spells that are not well - known.
Well, in a fanfic, anything can be made possible. Maybe it could be that Severus had a relationship in the past that was kept secret, and Hermione was the result. Magic could also be involved in hiding the truth all those years.
Maybe Ron Weasley. Imagine a fanfiction where Ron, after getting married, has triplets. Given his humorous and sometimes clumsy nature, it would be really fun to see how he and his wife deal with three little ones. He could pass on his love for food and his loyalty to his children in a really endearing way.
It's important to remember that fanfiction is a space for creativity. Regarding Hermione's attraction to Rodolphus, perhaps the author wants to show how love or attraction can be unpredictable. Maybe there's a magical or psychological reason. For instance, a spell gone wrong that makes Hermione see Rodolphus in a different light, or she might be attracted to the power he represents in a strange way.
One potential plot development could be the reactions of the other characters. Hermione and Ron might be shocked and try to figure out how this happened. Another could be Susan's journey of discovering her father's identity and the powers or responsibilities that come with it.