Vylarr knew what her daughter looked like and had been part of the royal procession to Winterfell, but the Captain of the Guard did not have a high enough rank to negotiate with a... king. This required a trusty Lannister, but Daven was already Tommen's Hand and couldn't leave now and Damion was on his way to Braavos. She wished she could send Jaime, but the barbaric Northmen might simply lop his head off, and he was busy in Golden Tooth, trying to rally the remains of their army. That only left Lucion, Damion's son, but he was quite young. And Cerenna and Myrielle, Daven's vapid sisters. But maybe they could be of use.