Ian Mcdonald said this quote

No one noticed them step off the train, no one saw them arrive in Desolation Road . . . . Then something very much like a sustained explosion of light filled the hotel and there, at the epicenter of the glare, was the most beautiful woman anyone had ever seen. Every man in the room had to swallow hard. Every woman fought an inexpressible need to sigh. A dozen hearts cracked down the middle and all the love flew out like larks and circled round the incredible being. It was as if God Himself had walked into the room. Then the God-light went out and there was a blinking, eye-rubbing darkness. When vision was restored, everyone saw before them a small, very ordinary man and a young girl of about eight who was quite the plainest, drabbest creature anyone had ever seen. For it was the nature of Ruthie Blue Mountain, a girl of stunning ordinariness, to absorb like sunlight the beauty of everything around her and store it until she chose to release it, all at once, like a flashbulb of intense beauty. Then she would return again to dowdy anonymity, leaving behind her an afterimage in the heart of unutterable loss.