Fallen Through Time

Alara Snow; bastard daughter of Eddard Stark and God's knows who, and sister of Jon Snow, gone missing from the Godswood of Winterfell. And, Seven Hells, finds herself in the midst of history being made after falling through time to 200 years ago, and coming face to face with the Targaryen rule, and the Dance of the Dragons soon after.
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"The Dance of Dragons. A history lesson that all the Septas made sure the children knew. Rhaenyra and Aegon Targaryen fighting for control over the kingdoms, both of them having the belief that they themselves belonged on the Iron Throne. It was a kingdom-wide war, as Houses chose sides, leaving family to fight family. All the rivalry for one throne, one title, left thousands dead."
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Based on my love for (or obsession with) Outlander and House of the Dragon.