By the time David meets Sophie for the second time, her appearance and character have changed dramatically. In the first chapter, David describes Sophie as a typical happy child, still in awe with the world:
The branches parted, and a face looked out at me. It was a small face, sunburned, and clustered about by dark curls. The expression was somewhat serious, but the eyes sparkled.
In the fifteenth chapter, the spark in her eyes and her dark curls have been replaced by a "glint of dark eyes" and "dark hair hanging down on each side of her sunburnt face."
The once "ordinary little girl" has been worn down and made bitter by living on the fringes and being what she calls a "deviant."
You've never known loneliness. You can't understand the awful emptiness that's waiting all round us here . . . Why didn't they kill me? It would have been kinder than this.
Her only her solace is her relationship with Gordon, but even that is threatened by Gordon's interest in Rosalind. Even when David tries to convince her that Rosalind is not interested, she finds it very hard to believe him. It's almost as if she has nothing else left.
"You can't know a thing like that about another person. You're just trying to—""I'm not, Sophie. I do know. You and I could only know very little about one another. But with Rosalind it is different: it's part of what thinking-together means."She regarded me doubtfully."Is that really true? I don't understand—""How should you? But it is true. I could feel what she was feeling about the spi—about the man." She went...
on looking at me, a trifle uneasily.
Her change in character is represented most dramatically, however, when she leaves the cave to kill someone.
The broad blade was clean and bright. It looked as if it might one have been part of the kitchen furnishings of a raided farm. She slipped it into the belt of her skirt, leaving only the dark handle protruding.