Directionless? She is biding her time (because she is still a fugitive) and seducing the next in line for the Vale, so that between her and her bethrothed, they can retake the North and have a very strong, legitimate claim to the North, Riverlands and the Vale.
And the way that's played out in the books is dull for me, personally. Mainly because, for 5 books, Sansa is still being played as the helpless victim, even in her own PoV chapters. I like what they seem to be doing with show Sansa. Last season she had a lot of development. Not sure about this season, as I haven't watched it.
Pffffft, you need SHOCKS, TWISTS and DEATHS to make good TV.
Game of Thrones is the Marvel of television. It's so popular that it can't afford to have a season with less 'action' than the last otherwise people will start calling it boring, so it just keeps ramping it up season after season to the detriment of character development.
Who's saying shocks and twists are needed for good television? Some of my favorite shows don't throw out shocks and twists and deaths every two seconds.
Directionless isn't exactly the right word, but I should say that Sansa's character development is incredibly slow going, in contrast to someone like Dany, who's character development was actually rather fast (victim to aggressor in the span of a book). Sansa has been put through the ringer, but as far as the book goes, she's still the same Sansa that she was in her very first pages in A Game of Thrones. No matter how annoyed we may be that Dany makes boneheaded decisions, or that she's not in Westeros yet, we can't say that Dany is the same frightened teenager she was in her first chapter of A Game of Thrones.
While Sansa's story arc in the books at least, is barely moving, and neither is her character arc. Her character in the books is forced to sit and wait in silence while the big boys make all the decisions for her. That's just not very entertaining to read. Perhaps I'm just not a fan of passive characters who spend their entire story arcs getting shit on and manipulated by everyone.
It's where I think show Sansa is succeeding. We have been getting teased bits and pieces of character growth. Her time with Joffrey has changed her. She is still sweet, kind Sansa, but she isn't quite the victim she has been. Some of the lessons that Cersei imparted on her many moons ago she seems to have taken to heart. Her conversation with the Tyrell women have also had an affect on her. We saw last season how she is learning that she can "control" Littlefinger using what god gave her; her charm, looks, and naivete. There's no "Dark Sansa," just a teenage girl who is growing up and realizing that the world around her isn't like it is in her story books, and she must learn to survive. I'm not expecting a super cutthroat Sansa, but I honestly wouldn't be surprised if it goes that route in show or book. I can see her snapping, but I can also see her simply becoming a smart manipulator, like Margery. Sansa is in much more control, and is much more aware, in the show compared to her book counterpart. That makes her much more interesting. She doesn't need to shock us, or kill lots of people in order to make that interesting. She's in a very perilous position, where a misstep or misjudgment could cost her dearly. That's exciting to watch. Her sitting in the Eyrie slapping Robin while Littlefinger creeps on her isn't fun to read in the books.
I'm very interested to see how her arc plays out in the show (and I hope her arc picks up in the books too).