The plot could revolve around Sara's pregnancy being a surprise to everyone, including herself. She then has to figure out how to balance her life as a Legend with the new life growing inside her. Maybe she has to take a step back from some dangerous missions.
One idea could be that in the fanfic, Sara discovers she's pregnant during a mission. She might initially be in shock and worry about how it will affect her role in the Legends. Maybe she tries to keep it a secret at first but as the pregnancy progresses, it becomes harder to hide.
One common theme is friendship. Since Ava and Sara are often characters in the same universe, their friendship is a central focus. Writers like to explore how they support each other. Another theme is adventure. They are often put in exciting situations where they have to fight or solve mysteries.
One great fanfiction might be one where Ra's al Ghul and Sara have to team up to save the timeline. In this story, their initial distrust gradually turns into respect as they face various challenges together. Their different fighting styles and moral compasses create interesting conflicts and resolutions.
When writing, focus on their interactions. Since they have different personalities, show how they clash and then gradually find common ground. For instance, Ra's al Ghul is used to being in control and Sara is more of a rebel. You can use their dialogue to show this dynamic. Also, don't rush the relationship. Let it develop naturally over the course of the story. Maybe start with a reluctant partnership and end with a deep connection.
Sure. One great Ava and Sara fanfiction is 'Ava and Sara's Adventure'. It's about them going on a journey through different dimensions. Another one is 'Ava and Sara: Bond of Friendship' which focuses on how their friendship develops in various situations.
I really liked 'The Lost Legends'. In this fanfiction, it explores what would happen if some of the Legends got separated during a time - jumping mishap. It dives deep into their individual strengths and how they manage to find their way back to each other, all while trying to fix the time - stream errors they accidentally caused.