Sansa Stark says (probably not exact wording) "Response: after a player plays an attachment on Sansa Stark, that player may draw a card".
First glance you read that and think that the person playing the attachment may (if they choose) draw a card. But hang on. Can you trigger responses on other people's cards? That just seems... wrong. I suspect that they use the word "you" alot do refer to the owner of the card (at that time) - so "Response: after you do this, you may do that". But is it really the case that without the word "you", anyone can use anybody else's responses?
If not, does that mean that the owner can choose when to allow this to happen? Obviously use it yourself when you play positive attachmenets on her, that's fine. But the fact that this card specifically doesn't use the word "you" is what confuses me. Is it meant for melee play? Where you can entice people to play positive attachments on her in return for cards, as part of the whole temporary alliances part of the game?