Littlefinger’s plan was to turn Sansa and Arya against each other, and in the end it was he who was executed. So did Arya and Sansa know they were being manipulated by him from the start and just played along to make him show his cards? Or did they learn late?

I was watching the first GoT episode and I remember reading or hearing somewhere that the scene in the forest with the dead stag and direwolf is a foreshadowing device used by the writers. I know that Jon mentions that the 5 direwolf pups can represent the 5 stark children. But then Jon finds t...