I beg to differ. I think that she has developed more than you give her credit. I think it's realistic to have your world populated with more than one type of character. Not everyone in life is going to have a plan or be proactive. Sometimes people are passive and that's okay. However, that's not to say that Sansa is 100% passive. She risked a lot by agreeing to the Tyrells' plan for her to marry Willas as well as trusting the drunk knight (I forget his name) to help her escape, which required sneaking around. I found that I really enjoyed her POV characters because it provided insight into the court intrigue happening at King's Landing. Sometimes it was a welcome break from other more "intense" POVs.