Although Adam spent most of his time looking out of his window, it didn't take long for me to notice that he kept glancing at Aileen with a mixture of curiosity, confusion, and perhaps more than a little bit of fear. He kept his left arm protectively wrapped around his little sister, while Amy leaned up against him, holding her doll tightly to her chest.

After several minutes of silence, Aileen unbuckled her seat belt and turned around to look at the boy sitting directly behind her. ...