It's their Lord Father.

As the Stark sisters turned, they were startled to see their father, Eddard Stark, standing there, watching them with disappointed eyes. Jeyne Poole, meanwhile, had darted away, showing a sort of foresight that the sisters couldn't help but envy right now. "Sansa... Arya..." he said at last. "What is the meaning of this?"

"It's her!" shouted Sansa all at once. "Arya's horrible!"

"I am not!" shouted Arya. "You're horrible, you cunt!"

"BITCH!" screamed Sansa, slapping her sister.

As the hitting began again, Eddard Stark took a deep breath. "Girls!" he said angrily, "What is wrong with you two? Is this how sisters should act? How Starks should act? Stop this now!"

The pair ended their scuffling, and disentangled themselves from each other, both filled with a deep and sudden urge to stare at the floor. Their father crossed his arms. "You... how... doing this! While we host the king and his family!" He glared at them for a moment. "Go to the Godswood, both of you! This bad behavior must be dealt with!"

With nervous hearts, the Stark sisters headed to the Godswood, stood before the heart tree, and waited...