The awful Bolton scene isn't in the books — not with Sansa, at least

The horrid scene  in which Ramsay Bolton rapes his new wife, Sansa Stark, while Theon Greyjoy is made to watch  is an invention of the show, but only to an extent. Martin's written version of Ramsay's wedding night  is indeed truly horrific. Even worse things are implied to happen to the bride later on. The big difference, of course, is that the bride is a friend of Sansa's named Jeyne Poole. The show has chosen, instead, to put Sansa herself through these events rather than introducing a new character.