Crimson Memory, Golden Fate (смешанная)

Nim's life began at fifteen when she woke with no name and no memory. For three years, she has made a new life for herself, training with a mysterious man named Lantos. But when a "training exercise" lands her in combat with the infamous, Jaime Lannister, Nim the Nameless finds herself thrust into the deadly Game of Thrones and discovers that she may not be as nameless as she seems.
This is an AU in which an aged up Arya loses her memory and ends up back amongst the Lannisters with no knowledge of her dark history. Eventual very slow burn pairing with Jaime. I'll sell you on it. Promise.