One possible storyline could be that in an alternate universe, Harry Potter and Molly Weasley develop a relationship over time. Maybe Harry is in need of a motherly figure after all he has been through, and Molly's nurturing nature draws them closer. They might face opposition from the wizarding community as it goes against the norms.
Perhaps in this fanfiction, Molly Weasley loses Arthur in a tragic accident. Harry, being the hero he is, steps in to support her. As they spend more time together, they realize they have a deep connection and fall in love. Their marriage could then be about them uniting their families, Harry becoming a part of the Weasley clan in a different way than before.
In the fanfiction, it could start with a spell gone wrong. A magical mishap causes Harry and Molly to be magically bound in a way that makes them feel emotions for each other that they wouldn't have otherwise. As they struggle with this new situation, they get to know each other better and eventually choose to get married, with the story then exploring how they navigate their new relationship within the wizarding world.
The relationship could start with mutual respect. Harry has always respected Molly as a mother figure in the Weasley family. This could gradually turn into something more romantic as they share more personal experiences. For example, Harry might confide in Molly about his post - war traumas, and Molly's understanding and care could lead to deeper feelings.
One possible reason could be that she might think Harry is putting himself in unnecessary danger, like when he goes off on his own to face Voldemort without a proper plan. Molly is very protective, and she may feel frustrated with Harry's recklessness.
One possible storyline could be that after the war, Harry and Fleur start to bond over their shared experiences of trauma and loss. They find comfort in each other and gradually fall in love. Another could be a story where Fleur has always had a secret admiration for Harry, and when she realizes he has feelings for her too, they decide to get married. Maybe in this fanfiction, they also have to face the challenges of different cultures, as Fleur is from Beauxbatons and Harry is from Hogwarts.
One possible reason could be a misunderstanding. Maybe Molly does something that Harry misinterprets as a threat to his friends or his mission. For example, if Molly tries to keep Harry from a dangerous but necessary task, Harry might see it as her overstepping and feel the need to 'punish' in the context of the fanfiction, which could just be a strong rebuke or some form of isolation within the story's plot.
One scenario could be that Harry Potter accidentally breaks a family heirloom of the Weasley family while at the Burrow. Molly, who treasures her family's possessions, would be very angry with him. Another possibility is that Harry gets into a fight with one of her sons, like Ron, and Molly takes her son's side, getting mad at Harry for starting the argument.
One great Molly Weasley fanfiction is 'Molly's Moments'. It shows her behind - the - scenes efforts in taking care of the Order of the Phoenix members at the Burrow. Another is 'Molly's Motherly Love' which delves deep into her relationship with each of her children, especially during the tough times of the wizarding war. There's also 'Molly's Magic' that focuses on her underrated magical abilities.
In fanfiction, Molly Weasley is often depicted as a strong - willed and loving mother figure. She is shown as someone who is extremely protective of her family, just like in the original books. For example, she might be portrayed as being very strict when it comes to the safety of her children, especially during dangerous times in the wizarding world.
Perhaps Bill is preparing Harry for a secret mission. He might be training Harry in stealth, disguise, and communication spells. This could involve Bill using his experience from his travels around the wizarding world to give Harry unique insights. Bill could also introduce Harry to some of his contacts who could provide valuable information or assistance for the mission.
One reason could be that the fanfiction changes her personality traits. In the original, she's kind - hearted but in fanfic, she might be made mean. Harry, who knows the real Molly, won't like this new version.
One possible reason could be that Molly might blame Harry for putting her family in danger. Since he is often at the center of Voldemort - related troubles, her family gets involved in protecting him. For example, during the Battle of Hogwarts, her family was right in the middle of the fight mainly because of Harry. Another reason could be that she blames Harry for Ron's decisions at times. Ron follows Harry on his adventures and sometimes it puts Ron in harm's way, which Molly as a mother may not like.