You Killed My Brother

In the books, Jon Snow discussed bringing food from the Vale to supply the men and Free Folk on the Wall. Then he was betrayed. Bowen Marsh led the attack on him, and is acting Lord Commander. What if he remembers Jon's idea of having food brought from the Vale? Sansa is Lady Regent of the Vale after she outsmarted and killed Littlefinger. When she hears of her brother's demise...