One possible plot could be Arya using the brothel as a cover. She might be spying on certain characters who frequent the place. Since she has skills in disguise and stealth, she could blend in among the workers or patrons to gather information for her own purposes, like revenge or to aid in the political chaos of Westeros.
In this fanfic, Arya could be on a mission to rescue someone who has been held captive in the brothel. She infiltrates the place, using her knowledge of the seedy underbelly of society. Along the way, she discovers secrets about the brothel's owners and their connections to powerful people in Westeros. She then has to navigate through a web of lies and danger to complete her rescue mission and expose the truth.
In a fanfic, Arya could be in the brothel to rescue someone. It could be a young girl who was sold into prostitution against her will. Arya, with her skills and no - nonsense attitude, decides to take matters into her own hands. She has to outwit the brothel owner and any guards, and this adventure in the brothel could be a new chapter in her journey of self - discovery and growth as a character.
Arya's character could develop by facing new moral dilemmas. Being in a brothel, she'd see the exploitation of women and might decide to take action against it. This would add a new layer to her sense of justice.
The plot might involve Arya training the dragon in secret. Since she has her skills in stealth and combat, she could teach the dragon to be a silent and deadly force. They could explore uncharted regions of Westeros together, uncovering secrets and perhaps finding new allies or ancient powers.
Well, one possible plot could be that Robb stumbles upon Arya in the chaos of war. He might be leading his troops and suddenly recognize her among a group of refugees or captives. Then he would immediately take her under his protection, ensuring her safety and vowing to take her back home. This would be a moment of great relief and joy for both of them, especially considering all the hardships they've been through.
Arya might become more empathetic. Seeing the plight of the women in the brothel could make her more aware of the different forms of oppression in Westeros. This newfound empathy could influence her actions later, making her not just a seeker of revenge but also a fighter for the downtrodden.
A great plot twist would be if Arya's gag was part of a larger scheme by the Faceless Men. They could be testing her in a new and extreme way. Maybe they want to see if she can still carry out her assassinations without being able to speak or use her normal methods. This would put her skills and training to the ultimate test.
A simple plot could be that Arya and Lemon cross paths in a forest. They both have different goals but realize they can achieve more together. So they team up to hunt down a group of outlaws who have been terrorizing the local villages.
Well, in a fanfic where Robb finds Arya, they could immediately start making plans to take back Winterfell. Arya's skills could be a great asset to Robb's military campaigns. They might also share stories of their experiences during their time apart, which could strengthen their bond.
In a fanfic where Arya gets captured, she might be used as a bargaining chip. Her captors could try to exchange her for something valuable, like a strategic location or a large sum of gold. Maybe they want to use her to manipulate the Starks.
The twin's recognition of Arya could also lead to a change in Arya's character arc. Up until that point, Arya may have been operating in a certain way, but the encounter with the twin makes her reevaluate her goals. If the twin is a positive influence, Arya might start to consider more peaceful or diplomatic solutions to the problems she faces. On the other hand, if the twin has ulterior motives, Arya could become more guarded and distrustful, further hardening her already tough exterior.