One possible reason could be that she's on a secret mission. Maybe Ozpin sent her on a dangerous errand without telling the others to protect them. For example, he might have discovered a new threat related to Salem and needed Ruby to gather intel quietly.
Another reason could be related to her silver eyes power. It's possible that she went missing while trying to understand more about her unique ability. She might have followed a lead on its origin or a way to enhance it and got lost or trapped in a place that's difficult to get out of, like an ancient, forgotten temple.
She could have been kidnapped by an enemy. Perhaps a new villain has emerged, someone who has a vendetta against Ruby or the entire RWBY team. This villain might have planned carefully to abduct her when she was alone, thinking that by taking Ruby, they can control or stop the resistance against the Grimm.
Weiss would definitely be one of the first to search for Ruby. They are teammates and friends. Weiss has shown her loyalty to Ruby many times before. She would use her family's resources and her own skills in combat and magic to try and find Ruby.
One possible reason could be the loss of a teammate. In the dangerous world of RWBY, if one of her close friends were to be seriously injured or die, it would be devastating for Ruby. Another reason might be the pressure she feels as a leader. She has to make tough decisions and carry the weight of her team's success or failure, which could become overwhelming at times.
One possible reason could be to explore different character dynamics. By changing their age order, fanfiction writers can create new storylines. For instance, it can lead to a different kind of sisterly bond between them.
One possible plot could be Ruby being betrayed by her closest friends. Maybe she discovers a dark secret about the Huntsman academies that makes her question everything she has ever believed in. This disillusionment could start her on the path to evil as she feels that the system she has dedicated her life to is corrupt.
One possible reason could be that she loses inspiration. Maybe she has explored all the ideas she initially had for her fanfiction and can't come up with new and exciting storylines. Another reason might be lack of time. If she gets involved in more important or urgent matters in the RWBY universe, she simply doesn't have the hours to sit down and write fanfiction anymore. Also, she could face criticism from others which makes her lose confidence in her writing and decide to give it up.
She might run away because of a conflict with her friends or team members. Maybe there was a misunderstanding or a disagreement that she couldn't resolve at that moment, and running away seemed like the best way to avoid further confrontation.
Well, in a girl missing story, she might have been a victim of human trafficking. Some criminal gangs target young girls. Or it could be due to a natural disaster. Say, if there was an earthquake or a flood, she could have been separated from her family and be missing. Mental health problems can also be a cause. If she was suffering from depression or some other mental illness, she might have wandered off without realizing.
Possible reasons in the 'Missing at 17' real story include mental health issues. A 17 - year - old struggling with depression or anxiety might decide to disappear as a way to escape their internal turmoil. Also, it could be due to a relationship gone wrong. If they had a bad breakup or were in an abusive relationship, they might run away. Additionally, it could be related to educational stress. Failing grades or pressure to perform well in school could push them to leave.
One popular 'RWBY Ruby Missing' fanfiction might be 'Search for Ruby' where the other characters embark on a journey across different kingdoms to find her. It has an exciting plot with lots of action and character development.
Perhaps in this 'Boruto goes missing fanfic', Boruto is lured away by a mysterious figure who claims to have information about his future or his father Naruto's past. He follows this figure without thinking, only to find himself in a strange and dangerous place. His disappearance then sets off a chain of events in the village. People start to suspect that there might be a traitor among them who helped Boruto disappear. His teammates, like Sarada and Mitsuki, would then start their own investigation to find him, facing not only external threats but also internal doubts and suspicions within the village.