Why does Maxwell say the airhostess was “the very queen of her kind”?

Maxwell said that the airhostess was “the very queen of her kind” because she was extremely friendly and helpful. He took her into his confidence about the incident with the box. She suggested that he might prefer to have his pet on his knee. Hearing this, he developed a profound admiration for her, for she understood the pain of both the otter and its owner.