A possible plot is Molly Hooper being drawn into a world of dark magic while trying to solve a strange death at a historical site. It could involve her trying to figure out how the victim was involved with a secret occult group. Or, she could be targeted by a serial killer who has a fascination with her work in the morgue, and she has to use her wits to outsmart the killer. She might also find herself in a situation where she has to choose between her loyalty to Sherlock and her own safety in this dark fanfiction scenario.
A mysterious detective from another city who has a different approach to solving crimes compared to Sherlock. This character could initially be at odds with Molly but later become an ally. Another could be a reclusive scientist who has some dark secrets related to the cases Molly is involved in. There might also be a street - smart informant who has connections in the underworld and provides Molly with valuable information, but at a price.
One possibility in this fanfiction could be that Sherlock initially struggles with the idea of having a baby. He's so used to his logical, detective - focused life. But Molly's nurturing nature helps him gradually come to terms with it. Maybe the baby inherits Sherlock's incredible observational skills and Molly's kind heart.
One popular Molly Hooper fanfiction might be those that explore her relationship with Sherlock in more depth. For example, some stories could show her helping Sherlock solve cases from a different perspective, adding her own unique insights.
One common theme is the relationship between Molly and Sherlock evolving. Since Molly is pregnant, Sherlock might have to step up and be more protective or show more emotions. For instance, he could start to see Molly in a new light, not just as a friend or colleague in the morgue.
You should also pay attention to the dialogue. Make it sound like something Molly would actually say. Since she's a pathologist, use some medical jargon in a natural way when she's at work. And don't forget to develop her relationships with other characters, like Sherlock, John, and Mrs. Hudson.
One common theme is the unspoken love between them. In many fanfictions, Sherlock is portrayed as having deeper feelings for Molly that he struggles to express. For example, in some stories, he might show his care for her in small, indirect ways like solving a case that's related to her in some way.
One common theme is unrequited love. Molly has strong feelings for Sherlock, and in many 'hurt' fanfictions, this unreciprocated love causes her emotional pain. For example, she might see Sherlock with other people and feel heartbroken.
One place to start looking could be Archive of Our Own (AO3). There are often a variety of fanfictions about Molly Hooper in different situations, including ones where she might be 'hurt' in an emotional or physical sense. You can search using the tags related to Molly Hooper and the specific themes of hurt you're interested in.
One interesting fanfiction could be where Molly Hooper's pregnancy is a surprise to Sherlock. In this story, it might show how Sherlock, who is usually so detached, tries to understand and support her. Maybe he starts observing all the little changes in her behavior and routine due to the pregnancy.