Slayer Sam

Perhaps I took this up wrong, but is Margaery not completely playing Sansa at this point? Olenna and Varys have just spoken of how Sansa could be the key to the North, and neither want Littlefinger to possess this key. Next thing, Margaery is proposing Sansa instead goes to Highgarden, giving Loras and the Tyrells the prospect of Northern control. Margaery is not 'caught up' in the Game of Thrones, she's playing it, and very well, under the guidance and protection of her grandmother. Sansa, in contrast, is STILL so naive, innocent and, in truth, cringeworthy at this stage. A pawn in the game.