In some fanfictions, Ahsoka might save Anakin through the power of their strong bond. She could remind him of their shared memories, the good times they had together, and the Jedi values they once held dear. By appealing to his emotions and the part of him that was still good, she could potentially pull him back from the dark side.
Well, at first, they might seem closer as they are now both part of the same 'dark' world. But soon, the dark side's influence of greed and power - hunger would start to drive a wedge between them. Anakin, with his already tumultuous relationship with power, might try to dominate Ahsoka. Ahsoka, having been dragged into the dark side against her will perhaps, would resent Anakin for it. Their relationship would be a volatile mix of shared darkness and individual power struggles.
One plot idea could be that Anakin, already on the dark side, tries to convince Ahsoka to join him. He shows her the power that the dark side can offer, like how quickly she could gain the ability to defeat her enemies. But Ahsoka is conflicted as she still has a strong bond with the light side teachings of the Jedi.
A key element would be the relationship between Ahsoka and Anakin. Their history, trust, and mutual understanding play a big role. Another element is the nature of the dark side's hold on Anakin. Understanding what led him to the edge of the dark side is crucial. For example, if it was his fear for Padmé's life, then Ahsoka would have to address that fear somehow.
One aspect of Ahsoka in dark side fanfiction might be her change in appearance. She could start wearing darker robes and her lekku might even seem to have a more menacing look. Her fighting style would also likely change, becoming more aggressive and less about defense. Writers often explore how her relationships with other characters, like Anakin, would be affected. Anakin might be torn between trying to save her and seeing her as a threat.
In fanfiction, Anakin joining the Dark Side often has complex motives. It could be due to his fear of losing Padmé. The Dark Side might seem to offer him a way to save her, so he succumbs to its power.
One popular 'dark anakin x ahsoka fanfiction' is 'The Twisted Path'. It explores a complex relationship between them in an alternate universe where Anakin's fall to the dark side takes a different turn in relation to Ahsoka. The story is filled with emotional turmoil and interesting character dynamics.
One common theme is redemption. Even though Anakin has turned dark, there's often a glimmer of hope for him to return to the light through his connection with Ahsoka. Another theme is the struggle between loyalty and the dark side. Ahsoka has to decide how to deal with a dark Anakin, whether to try and save him or oppose him.
Betrayal is a common theme. For example, she might be betrayed by the Jedi Order, which pushes her towards the dark side. Another theme is power. The allure of greater power, whether it's political or related to the Force, can be a factor in her fall.
One possible story could be that Ahsoka, after facing a series of great losses and betrayals, starts to be tempted by the Dark Side. Maybe she discovers some ancient Sith knowledge that makes her question her Jedi teachings. She could struggle with the newfound power it offers and the darker emotions it stirs within her, like anger and vengeance.