Sep 13, 2017
"It takes some skill to kill someone with a knife, you know. No one wants to watch Littlefinger stagger around gasping and bleeding like a pig for the entire hall while Sansa, completely unfamiliar with weapons, tries to figure where to stab him to make him finally die." Arya and Cat managed to cut people's throats on the first try, you know. Why Sansa is different?
Those were not public executions. They acted in peak traumatic moments, in self defense and out of desperation, and Arya already had swordfighting lessons and was relatively familiar with Needle by that point.