"Ah...!" Surprise flickered through her eyes. She had never seen magic like this before.
As a wolf, she would have gone to tackle him and lick his face in thanks. But as a human that would be a little not right; she had learned that when she arrived in a present-day Japan. The people that called themselves her "parents" had taught her proper mannerisms.
With a shift of positions Amaterasu moved to be on her knees and gave a little bow of her head. "Thank you very much." A moment passed and she held out her hand. People shook hands when meeting one another, didn't they? She had learned that from watching television. "I am Amaterasu."