In a discussion of the rape scene in last week's "Unbowed, Unbent, Unbroken", Miodrag Zarković made a distinct point about Sansa's arc which I find worth exploring:
The critics were, however, okay with the nonsense from the pilot. Just like, until the very last episode, they saw no problem in Sansa marrying Ramsay. I’ll repeat once more: some of them were even congratulating Benioff and Weiss on a job well done!
I’d really like to know how would those critics solve the wedding night. Would they choose to make it ridiculous by having Ramsay act normal and omitting the rape? Ramsay? Normal? Do they really think that would cure the mess created the moment TV Littlefinger sent a raven with the marriage proposal to the Boltons?
I still think the problem isn't sending Sansa up North, because what is happening here is a total flaw in the argument. I think it's a Black-and-White-fallacy. Therefore, let me take up the challenge.