Status: Partially True
Sansa definitely has a darker streak these days — one that really came to light when she watched her husband, Ramsay, be eaten alive by his own hounds. However, she doesn’t have a faithful band of soldiers helping her hang people throughout Westeros, and she’s certainly no revived, river-bloated corpse.
Original Theory: Another unexplored storyline from the book series is that of Lady Stoneheart — the vengeful, revived corpse of Lady Catelyn Stark, who travels Westeros seeking justice for the Red Wedding. Since the show has so far ignored this creepy character arc, many believe that Sansa Stark will dole out the revenge that her mother so desperately sought.
As another Redditor puts it: "That'd be interesting actually — we've been wanting the vengeance of Stoneheart for so long, and having her coming back and doing it for us, instead of Stoneheart herself could be way more powerful. Especially as her pain has been drawn out for a further two seasons. She's lost so much, and now she truly gets the chance to get even."
