I don't think Sansa-hate is inherently misogyny. A lot of it has to do with the fact that she did initial betray her own blood because of idiot Joffrey.

All Sansa did was tell Cersei that Ned was sending her and Arya back to Winterfell. She didn't know about the incest or about Ned's plans to have Cersei arrested, and she did everything she could to save Ned's life. I think it's ridiculous (and yes, misogynistic) that more people seem to blame her for Ned's death than they do Littlefinger, Ned (who basically doomed himself by telling Cersei what he knew), or even Joffrey.