Harry might be initially skeptical. After all the years of torment from Dudley, he can't just immediately trust this change. But if he sees that Dudley is truly sincere, he could accept the apology with grace.
At first, Harry might be shocked. He has never expected Dudley to ask for forgiveness. He could recall all the bad memories of being bullied by Dudley. However, if Dudley shows real remorse, Harry might forgive him wholeheartedly, thinking that everyone deserves a second chance. And this forgiveness could also be a way for Harry to finally let go of some of his own past traumas and move on in a more positive way.
Harry could be conflicted. On one hand, he has every right to be angry and hold a grudge. But on the other hand, he has always been a kind - hearted person. So he might ask Dudley for some time to think about it. He might also make Dudley prove his sincerity over time by changing his behavior towards Harry and others.
One possible reason could be that Dudley has finally grown up and realized how mean he has been to Harry all these years. Maybe he had an experience that made him see the error of his ways, like facing real danger himself and seeing Harry's bravery in a new light.
In many fanfiction interpretations, Fleur's response would depend on how the author has developed her character. If the author has portrayed her as more open - minded and adventurous, she might quickly accept Harry's invitation with a smile. But if she is depicted as more cautious or reserved, she could decline politely, perhaps stating that she already has other plans or that she doesn't think it would be appropriate given the inter - school dynamics.
She could say yes. Maybe she's always secretly liked Harry and this is her chance to get to know him better.
Well, perhaps Dudley uses his street - smart knowledge. He might teach Harry some rough - and - tumble moves he's learned from his own scuffles in the neighborhood. For example, showing Harry how to dodge a punch quickly.
Well, in a lot of fanfictions, forgiveness is a big theme. If the writer wants to explore the idea of redemption or growth, Harry could very well forgive Griffindor. However, if the fanfiction is more about conflict and drama, Harry might hold a grudge. There are also cases where Griffindor might not even do something that requires forgiveness in the first place in a particular fanfic.
It could lead to a big change. Maybe Harry and Dudley would learn more about Severus and develop a different relationship with him.
She could say yes without hesitation. After all, Harry is a popular and brave figure. It would be an honor for her to go with him.
She might say yes right away. Hermione has deep feelings for Harry as a friend, and those could easily turn into romantic feelings. She would see all the good in Harry and believe that they could have a great relationship together.
She might say yes. Since Harry is quite popular and charming in the wizarding world, Susan could be flattered and excited to go with him.
Perhaps Dudley finally stands up to his father's cruel treatment of Harry. Maybe he realizes that Vernon's behavior towards Harry is wrong and uses his own physical strength or some clever ruse to get Harry out of a difficult situation Vernon has put him in.