"He is my brother's yes. Don't worry, he's harmless. Come here, boy!" Arya cooed. A second later she realised she made a grave mistake, as Ghost was already upon her, and she had her face under attack again. The fact that she was riding on top of a horse did not deter him one bit, as he could easily reach her. Hells, Ghost was bigger than a warhorse. Maybe Jon would let her ride Ghost into battle?