One reason could be that she has seen his courage and selflessness. Harry is known for his heroic deeds, and Daphne might admire these qualities and thus want to protect him. Just like how people often feel the need to protect those they look up to.
It's also possible that Daphne has developed feelings for Harry. In many stories, when someone has romantic feelings for another person, they become protective. Daphne might be in love with Harry and her protectiveness is a natural outgrowth of her affection for him.
One possible reason could be differences in their social status. In some fanfiction settings, Daphne might come from a pure - blood family with high - society expectations, and Harry, being an orphan with a somewhat 'outsider' status in the wizarding world, may not meet those expectations. Another reason could be conflicting personalities. Maybe Daphne is a very reserved and traditional person, while Harry is more impulsive and adventurous, which could lead to her rejection.
One reason could be family pressure. Maybe Daphne's family has certain expectations for her future marriage, and they don't approve of Harry. And Harry, having his own complex family history, doesn't want to deal with the politics involved. So they elope to avoid the family drama.
Well, it could also be that Bellatrix is simply bored with the reality of her world in the Death Eater realm. Fanfiction provides an escape into a different world where she can interact with Harry in ways that she may not be able to in the official story. It gives her a chance to be part of new and exciting (to her) adventures that revolve around Harry, even if they are just fictional interpretations created by fans.
One possible reason could be Lockhart's over - the - top self - promotion. In the original story, Lockhart is constantly boasting about his achievements which are actually false. In fanfiction, this could be exaggerated, making Harry see him as an untrustworthy and annoying figure, thus causing fear. Another reason might be that Lockhart could be portrayed as having some hidden and sinister motives in fanfiction, which Harry senses and is afraid of.
Perhaps Anko has a personal connection to Naruto. Maybe she sees a bit of herself in him, like his determination in the face of difficulties, and this makes her feel a sense of kinship and thus the need to protect him.
Perhaps there is a political reason. Some powerful pure - blood families might be trying to strengthen their influence by uniting the Potter and Malfoy families through this marriage, even if it's by force. Another possibility is that there is a prophecy that they misinterpreted which led them to force this marriage.
One possible reason could be that he's wrongly accused of a serious crime, like using dark magic. In the wizarding world, such accusations can lead to expulsion. Another reason might be that he's framed by a powerful enemy who wants to get him out of Hogwarts. For example, a Death Eater could plant false evidence against him.
Well, Harry might save Daphne from Draco because Harry is always the hero type. He doesn't like Draco's pure - blood supremacist attitude. Daphne could be a target of Draco's cruel remarks or actions just because she might not fully conform to Draco's ideas. Harry, being the defender of the underdog in many cases, steps in. Also, it could be that the plot of the fanfiction is building a new alliance or relationship web, and Harry saving Daphne is a key part of that, leading to new story developments.
She could be running away due to family pressure. Her family might be forcing her into an arranged marriage or pushing her to join a certain dark - leaning group within the Slytherin community.
Well, it might imply that she is part of a fan community. In the world of Harry Potter, there are so many fanfiction out there. If Daphne has some, she could be sharing it with friends in that community, discussing different theories and characters. For example, fanfiction often delves deeper into characters' backstories or creates new relationships. She might be really into exploring these aspects that the official books and movies didn't cover as much.