The moment he watched her walk through the gate, he took to the treetops to watch her. He rationalized that he had said she was under his protection, he could not protect her if he could not see her.
She had several guards escort her back to the large shiro upon the highest area of the land the humans resided on.
He watched their progress with a critical eye, and was surprised that when they were just about to the doors, Izayoi turned and looked directly towards the tree he was perched in, as if she could see him.