HBOPoor old Sansa Stark. She just can't catch a break. Ever. It says a lot that the most positive thing to happen for her in the last few seasons is that she's jumped from the scorched ruins of her old home, risking massive injuries (or even death) to escape her sadistic, rapist, murderer husband who will be hot on her heels in a search party. She's simply got to run. No looking back, she just needs to get as far away from there as possible, but Sansa is not Arya, she won't last long alone and Reek isn't capable of caring for her. Sansa will run into a familiar face, and it just so happens that Brienne and Pod are in the vicinity. That seems like the obvious route for Sansa, and from there I'd hazard a guess that they might head for the Wall to reunite with Jon as word of his death will be yet to leave Castle Black.