Another storyline could revolve around the relationship between the sister and Emily. There could be some sort of conflict or misunderstanding that they need to work through. This could add depth to both characters. For instance, the sister might be jealous of Emily's dangerous but exciting job and feel left out of her life.
A great storyline could also be the sister being targeted by an unsub. This would put the BAU in a tough situation as they not only have to protect her but also catch the bad guy. It would also show how Emily's personal and professional lives collide, and how she deals with the stress of having her sister in danger.
One possible storyline could be the sister getting involved in one of the BAU cases in an unexpected way. Maybe she has a special skill or knowledge that helps the team solve a particularly difficult case. For example, if she's a psychologist herself, she could offer a different perspective on the unsub's motives.
Another important aspect is her goals and dreams. If Emily is all about catching criminals, the sister could be more interested in helping people in a different way, like through social work. This would create a contrast between them. And don't forget to show her flaws. Maybe she's a bit stubborn or has a short temper, which can make her more human and relatable in the fanfiction.
One common theme is family. Since the OC is a sister, there's often exploration of family dynamics within the context of the BAU. Another theme is acceptance. The OC sister usually has to prove herself to the team and gain their acceptance. For example, in many stories, she might have an unorthodox method of profiling that the team is initially skeptical about.
One great Criminal Minds OC sister fanfiction is 'The Unseen Sister'. It adds a new character, an OC sister, into the BAU team's world in a really interesting way. The story focuses on how she copes with the challenges of the job while also having her own personal struggles.
One great place to start looking for Criminal Minds OC Rossi sister fanfiction is Archive of Our Own (AO3). There are often well - written stories there. You can search using the tags like 'Criminal Minds', 'Rossi', and 'OC' to narrow down the results.
One great source for Criminal Minds Tara OC sister fanfiction could be Archive of Our Own (AO3). Just search for 'Criminal Minds Tara OC sister' on their site and you'll likely find a variety of stories.
One popular 'Criminal Minds Reid sister OC fanfiction' is 'The Unseen Bond'. It focuses on the relationship between Reid and his sister in unique ways, exploring how she copes with his dangerous job and her own life.
Family relationships are a very common theme. Since it's about Rossi's sister, exploring how they interact as family members, with all the love, conflicts, and support that comes with it. Another common theme is mystery. Given the Criminal Minds setting, the sister might be involved in some sort of mystery related to the BAU's cases.
A common theme is family dynamics. Since it's about Tara and her OC sister, exploring their relationship, whether it's a loving bond or a more complex, strained one, is often seen.
A frequent theme in these fanfictions is the OC's hidden talents or abilities. For instance, she might have a special skill in profiling that she's been developing on her own. This theme of self - discovery within the context of the 'Criminal Minds' universe is really engaging. Also, the theme of friendship within the BAU is often explored as the OC sister forms relationships with the other members of the team like Reid or Morgan.
The theme of mystery and danger also runs through many of these fanfictions. The sister might get involved in the cases either by accident or because she has some special knowledge. This leads to her being in dangerous situations, much like the BAU team, and having to use her wits to get out of them.