In negotiation just before the war for Winterfall during Game of Thrones season 6, Ramsay said "I did not feed the dogs for seven days" but at that moment Sansa has already left from there. At the end of the war, Sansa reminded Ramsay of that. How can it be?
I hope the explanation is not "Jon or others informed Sansa about what they talked about". I think there is a logical mistake at that scenes.