Our guess is that while Jon Snow is consumed with the white walkers, Baelish is working on a scheme to put Sansa in as the true head of Winterfell for his own gain.
There’s something very ominous about the first seventeen seconds of this Game Of Thrones trailer, featuring Sansa Stark slowly walking.
The real question is whether Sansa will go along with it, or stay by her brother.
Sansa has tolerated some pretty awful things, all for the promise of power, so don’t be surprised if she’s in on whatever has Littlefinger smiling.