Yes, there are likely several fanfics out there with that premise. The idea of Ayra Stark being the one to take down the Night King was a popular theory among 'Game of Thrones' fans even before the show's final season. Fanfic writers often explore such alternate scenarios, giving more depth and different storylines to characters like Ayra in relation to major events like the defeat of the Night King.
One possible plot could be that Ayra has a premonition about the Night King's plans. She then sets out on a solo mission to stop him. Along the way, she meets some old friends or makes new allies who help her get to the Night King. When she finally faces him, she uses her unique fighting style, a combination of her Faceless Men training and her Stark roots, to take him down. After that, she has to deal with the power vacuum left by the Night King's death and the political implications within Westeros.
Jon Snow could be paired with Arya. They could go on a quest to find something important, like a long - lost heirloom of House Stark. Along the way, they share stories of their past adventures and strengthen their bond as siblings, while also facing various challenges from the elements and enemies.
If Arya Stark becomes the Night Queen in a fanfic, it would be quite a shock to the system. Arya has always been a fighter against the forces of darkness, so her becoming the Night Queen would be a complete role reversal. One possible plot could be that she is forced into this position against her will, perhaps by some ancient magic or a deal gone wrong. Then, she has to navigate her new identity while still holding on to some of her old values, which could lead to a lot of internal conflict.
One great Arya Stark dancer fanfic could be 'Arya's Dance of Freedom' which explores Arya's journey through dance in a unique way. It shows her using dance not just as an art form but also as a means of self - expression and survival in a dangerous world.
Arya's character might develop in terms of her leadership skills. From being a lone wolf, she has to become a leader. She'll learn to make decisions for the greater good of Winterfell, not just for her own survival.
There are also fanfictions where Arya is betrayed by someone she thought was a friend. This is a very hurtful situation for her as she has always been cautious about who to trust. When this trust is broken, it can lead to a downward spiral of emotions for her, and it makes for a very emotional read for the fans.
Writers often use descriptive language to show Arya's physical pain. For example, they might write about her wounds, how she winces when she moves, or the blood seeping from her cuts. This makes the readers visualize her in pain.
In a fanfiction about Arya Stark being pregnant, she might be in a situation where she has to keep her pregnancy a secret. Maybe she's in a land where her enemies are everywhere, and if they find out, they'll use it against her. She could rely on her skills of disguise and stealth to hide her condition as she tries to find a safe place for herself and her baby.
Arya Stark is one of the most beloved characters from 'Game of Thrones'. She is initially presented as a bit of a tomboy, not conforming to the ladylike standards of her society. As the story progresses, she becomes a key player in the power struggles of Westeros. She is brave, resourceful and has a very distinct personality that makes her stand out among the many characters in the series.