The character development could be a gradual process. Initially, she might resist the Dark Side's pull, but small things would start to change. Her relationships with her friends would become strained. She'd start to isolate herself. As she gives in more, her physical appearance could subtly change, with a darker look in her eyes. Her abilities would also grow in a different way, more focused on destruction. She'd also start to view the galaxy in a more negative light, seeing it as a place that needs to be controlled by her and the Dark Side rather than the Jedi - like harmony she once strived for.
At first, she might seem conflicted. But as she goes deeper into the Dark Side, she'd become more confident in her new power. Her speech would change too, becoming more cynical. For example, she'd stop believing in the Jedi ideals she once held dear.
She might start by becoming disillusioned with the Jedi Order. Maybe she discovers some secrets that make her question their ways. Then, she could be lured by the power the Dark Side offers, like Darth Vader was. She'd likely start using more aggressive and unethical tactics in combat and in her relationships.
The influence of a powerful dark side user who targeted her specifically. This user could manipulate her emotions, play on her insecurities and gradually turn her towards the dark side. They might offer her knowledge or power that she couldn't resist, slowly corrupting her view of the Force.
If Ahsoka is tied up, her character development can be shown through her inner thoughts. For example, she might reflect on her past mistakes or decisions. This time of being trapped can be a moment of self - discovery for her.
She could be driven by a sense of betrayal. Maybe she discovers that the Jedi Order has been hiding something crucial from her, like a dark secret about her past or a false promise they made. This could shatter her trust in the light side and make her vulnerable to the temptations of the Dark Side.
It could be Darth Sidious. He is always looking for powerful allies. If he senses Ahsoka's potential and her growing disillusionment with the Jedi, he might manipulate her into joining the Dark Side. His cunning and power would make him a formidable antagonist in this scenario.
She might start wearing darker colors. Instead of her usual white and orange, she could don black robes with red accents, symbolizing her new allegiance to the dark side.
Ahsoka could become more cautious and distrustful. For example, she might be hesitant to engage in combat or trust other Jedi as easily after being hurt by Anakin. This change in her attitude would be a significant part of her character development.
Ahsoka's character development can be shown through her interactions with Lux. For example, if she starts to trust him more over time, it shows her growth in terms of being able to rely on others outside of the Jedi Order. Lux, on the other hand, could develop by becoming more confident in his own abilities after seeing Ahsoka in action. Maybe he starts to take more risks in battles or diplomatic situations.
It can also be shown through his behavior. Initially, he might be into sports and roughhousing with friends. But as he is being turned into a sissy, he becomes more interested in things like cooking, knitting or other activities that are more commonly associated with women. He might also start to speak in a more gentle and soft - spoken tone, which is a big change from his previous more gruff way of talking.
To show character development in a warg - into - dragon fanfic, one way is through its adaptability. At first, the warg will be clumsy and unsure in its dragon body. But as it spends more time as a dragon, it learns to move gracefully and use its powers effectively. Its values may also change. If as a warg it valued only survival and hunting, as a dragon it could start to value knowledge or friendship. It might start to communicate with other intelligent beings in ways it never did as a warg, which indicates a significant shift in its character. This could be further emphasized by how it makes decisions. For example, in a conflict, it might choose a diplomatic solution as a dragon rather than a violent one like it might have as a warg.