Obviously, Catherine Rollins herself could be a central figure even though she dies. Her memory could play a big role in the story.
If there was a love interest in Catherine's life, that person could be a main character. They would have a complex emotional journey dealing with the loss, perhaps even blaming themselves in some way for what happened.
Her best friend could be a main character. They might be the one who discovers her death and then has to break the news to others. They would also be deeply affected by her passing.
One possible plot could be that her death sets off a chain of events that forces the Five - 0 team to re - examine past cases. Maybe she was involved in something that they didn't fully understand, and her death reveals hidden secrets. For example, she might have been in contact with an old enemy of the team, and that connection comes to light only after she dies.
In the context of this fanfic, Catherine Rollins and Steve are likely characters created by the fanfic author. They could be original characters, or they might be based on existing characters from a particular show, movie, or book. Without more context, it's hard to say exactly who they are other than two individuals whose relationship is central to the story where Catherine makes Steve cry.
One possible plot could be about how her friends deal with the grief. They might gather to remember the good times they had with her, sharing stories and mementos.
One reason could be that their careers are taking them in different directions. Catherine might be getting opportunities in a different location that require her to be away from Steve for long periods, and they both realize that a long - distance relationship won't work for them.
One possible plot could be that Catherine Rollins reveals a long - held secret that Steve has been trying to keep buried. For example, she might expose a mistake he made in the past that cost his team dearly. This revelation shatters Steve's composure and makes him break down in tears as he realizes the consequences of his actions coming to light.
Maybe she's kidnapped by a secret organization that believes she has some special knowledge or power. As she's held captive, she tries to outwit her captors and find a way to escape, while her loved ones are in a frantic search for her, following a trail of mysterious events that lead them closer to her location.
One common theme is love and relationship building. Their relationship is often explored, from the initial attraction to deeper emotional bonds.
One possible reason could be that she has lost interest in the particular fandom or the act of writing fanfic. Maybe she has new creative pursuits outside of the fanfic world, such as working on her original stories.
Perhaps Catherine constantly belittles Steve in public or in front of his friends. Over time, this emotional abuse causes Steve to feel unloved and unwanted, and his heart is broken. She might make him feel like he's not good enough for her, which ultimately leads to the breakdown of their relationship.
The fans themselves could be main characters. They could be shown dealing with their emotions, sharing memories of the singer, and trying to keep the singer's legacy alive. For example, a group of super - fans might form a club dedicated to the singer after the death.