The Egypt Game is told from the perspective of a third-person narrator who seems to be observing the story as it unfolds. The narrator doesn't remain completely outside the characters' heads; we occasionally get glimpses into what April and Melanie are thinking. For example, we get a peek into April's head when she first meets Melanie and is trying to make an unforgettable first impression:
April adjusted Dorothea's old fur stole, patted up some sliding strands of hair and waited—warily. She didn't expect this Melanie to like her—kids hardly ever did—but she did intend to make a very definite impression; and she could see that she'd done that all right. (3.4)
Caring about the impression you make more than making friends—um, healthy. Still, even though April looks pretty full of herself from the outside, inwardly she's worried about whether or not other kids will take to her. And because April and Melanie are the main characters, it makes sense that the readers would get to see and understand what they're feeling. Thanks for the heads-up, narrator.