Maybe the spider bite is venomous, and Ruby has to struggle with her health deteriorating. As she battles this, she discovers that the venom has a connection to an ancient Grimm or some other dark force. She then has to go on a journey to find the antidote, which might be hidden in a dangerous and unknown place. Along the way, she might meet new allies who have had similar experiences with the spider - related things. And these new allies could teach her how to better manage her situation until she can be fully cured.
She might become more cautious. Since the spider bite is an unexpected and dangerous event, she would be more aware of the potential threats around her. For example, she might be more careful when exploring new areas.
One possible plot development could be Ruby struggling with her self - confidence. Losing an eye would change her perception of herself as a huntress. She might have to relearn how to fight and be more cautious. Another aspect could be the reactions of her team. Weiss might be overly protective, Blake could be empathetic due to her own past traumas, and Yang would be angry and determined to find out who or what caused it. The story could also explore how Ruby's Semblance is affected. Maybe it becomes less stable or she has to learn new ways to control it with her reduced vision.
Maybe a plot where Ruby discovers a hidden part of her family's past that links her to the Scarlet Spider in some way. This could lead to her having to learn new abilities or face a moral dilemma as she gets involved with the Scarlet Spider's more gritty and morally ambiguous world compared to the more straightforward good - vs - evil of RWBY.
Well, one possible plot development could be Ruby using her knowledge of future events to prevent certain tragedies. For example, she might stop the fall of Beacon earlier than it originally happened. Another could be her trying to change the relationships between the characters for the better. Maybe she'd make sure Weiss and Blake become friends more quickly. Also, she could work on improving her own skills faster by learning from her past mistakes.
One common theme is the exploration of Ruby's powers. In these fanfictions, the spider element often adds a new dimension to her abilities, like enhanced agility or the ability to create spider - like constructs. Another theme is the idea of Ruby facing new and unique challenges. The spider - related scenarios are often used to put her in situations she hasn't encountered before in the main RWBY series.
For Whitley, he could start off as a cold and aloof character, but through his interactions with Ruby, he could become more empathetic and caring. Maybe he realizes that there's more to life than just status and wealth. For Ruby, she could learn to be more patient with people like Whitley who come from a different background. She might also develop a better understanding of the complex social structures in Atlas.
A possible plot development is that Ruby's amnesia could be a result of some dark magic or a new type of Grimm attack. As she tries to recover her memories, she discovers new powers within herself that she didn't know existed before. This new power could be related to her amnesia in some way, like it was locked away and the amnesia event somehow unlocked it. Meanwhile, her friends are on a quest to find a way to reverse her amnesia, which leads them to encounter new allies and enemies along the way.
A plot could involve Ruby getting a special power-up related to Unlimited Blade Works. For example, she could gain the ability to project multiple versions of her scythe, like how some characters in Unlimited Blade Works project their weapons. This new power would change the way she fights and she would have to train to master it while also dealing with the threats in her RWBY world that are now more dangerous with this new ability.
There's also 'Ruby's Journey into Motherhood' where the story focuses on Ruby's internal struggles. She has to balance her fears and excitement about becoming a mother. The fanfic also shows how her combat skills might be affected as her pregnancy progresses.
One popular RWBY Spider Ruby Rose fanfiction is 'Ruby's Arachnid Adventure'. It explores Ruby Rose's encounter with a mysterious spider - like Grimm and her journey to overcome it. The story is full of action and showcases Ruby's growth as a huntress.