Sorry in advance, fam.
Arya Stark’s days may be numbered, according to a new Game of Thrones theory from Reddit that's been blowing up like a barrel of Wildfire under the Sept of Baelor.
According to Redditor ultra1994, George R.R. Martin actually foreshadowed Arya’s death years ago. In the very first book of Martin’s A Song of Ice and Fire series, Jon Snow is speaking to his “half-sister” (actually his cousin, we now know) Arya.
The headstrong many-faced girl had not yet traveled to Braavos. She was learning sewing lessons with Sansa at Winterfell, and following an argument with their sewing teacher, she storms out of the room crying. Jon sees Arya, and tries to comfort her. But his words may have actually held the prophecy about her possible death in the final season.