leoff

I'm not sure of that. The show made Jon send a letter to the Boltons, so the Boltons know for sure a Stark bastard lives nearby with a small army. Davos told Jon the North would be better without the Boltons and the Night's Watch vows shouldn't prevent Jon of doing something about it. Also several hints of something bad happening to Stannis. I can picture a scenario where Brienne helps Sansa and Theon to scape, Stannis is seemingly defeated and Ramsay thinks Sansa went to Jon. As soon Jon is back from Hardhome, Ramsay's letter inform him Sansa was his captive wife and Stannis is dead. Enraged about Sansa and guilty about not helping Stannis, Jon decides to march against the Boltons and then... Knifes in the dark.

Arya is not meant to be a faceless killer, she's gonna dump them eventually. Real wolves aside, humans are Arya's pack and she doesn't get along with them very well. Unless she changes that, she's in risk. I don't think GRRM wrote the "when the winter comes, the lonely wolf..." line by random chance. Kudos to GRRM for still write Arya as a sympathetic character, doesn't change the fact she's becoming a stone cold killer incapable of remorse. She might eventually reach a point of no return, no redemption. Sansa was written to be weak, futile, naive. Gradually she's becoming something else entirely. GRRM must have big plans for her. He knows she's never going to be popular as Arya, and by making her succeed in the end is his way to make a point, just like killing the good and noble Eddard so early was to make a point.

I believe Arya is the one most likely to die ("when the winter comes, the lonely wolf dies and the pack survives") just like Lyanna, whom Ned found dreadfully similar to Arya. Sansa is the one adapted to survive in a pack. Predictable as it is, I would be disappointed If Sansa didn't end as a major player of the Game of Thrones. She's my lead favourite to be on the Iron Throne in the end as the Queen who outshines Cersei. If the direwolves are meant to predict anything, Arya (Nymeria) is the one who should be dead and currently is surviving based on borrowed time.