When he realized how far north he had come in his search for Arwyn he knew Kingsfall wasn't that far. He also knew Hearthwood River to be there as he had visited Lachesis the previous year. He didn't know if his daughter had traveled this far or if there was any chance that the river wolves might have seen her. He remembered when Adelayde had come to inform them in White Fir Notch of the disappearance of one of their pups. It wouldn't hurt to ask the river wolves to look out for Arwyn at least.
So he continued his journey through the king's wood to reach the Hearthwood borders. By this time in his journey his coat had become dishevelled. He had seen that when he'd stopped for a quick drink if water. Emrys hadn't eaten much as his only concern had been finding his daughter.
When he finally reached the border he stopped and looked around for anyone who might be patrolling. He then lifted his muzzle into the air and announced his presence at the border in hopes someone would come and speak with him. Then he waited pacing as he'd been unable to remain still in the past days.