Ayra Stark, the youngest daughter of Ned and Cathryn Stark seems to be the toughest little girl ever. She has survived many of her own trials.
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Ayra, has grown from a young child into a young woman. but her journey was learning how to fight back with a sword. She learned how to become assign ate by using different faces to disguise herself.
She was protected from see her fathers head removed at least. And ushered out of Kings landing and towards the wall and winter fell. although her journey northward was not easy by any means.