When Sansa first heard the rumor of dragons awakening at the hand of a lost princess she almost laughed, over the shear fact that it sounded like a story. The months and years passed, and these rumors started to come more often, and with added detail. They would say she has conquered cities and is raising an army, then the rumors started that her and her army had bought ships and were crossing the Narrow Sea.
When Sansa received word of this "dragon mother" wanting to meet her, half of her wasn't even surprised, after all the North had separated itself from the rest of the Seven Kingdoms, after a war that killed most of her family, leaving her in charge of the North. After weeks of seeking advice and preparation for being attacked Sansa sent word to the mysterious woman, inviting her to Winterfell.
To Sansas, and everyone in her companies, surprise the woman showed, in a covered cart, not by dragon back as was the rumor. After what felt like ages the cart came to a stop, and a woman stepped out. She had nearly white hair, done up in beautiful braids, when she walked closer Sansa was nearly starstruck at her beauty. The woman was standing before her now, they were the same height.
"Sansa Stark, I assume?" The woman said, looking her over
"The dragon mother, I assume?" Sansa retorted, nearly kicking herself the moment it came out of her mouth.