Twenty people were waiting behind us. Noah was beginning to stir, and Lily was close enough to see me from the alternative seat. “Don’t worry, Mom. I’ll be fine,” she said. Ten years old, giving me permission to leave her behind. As I turned away, she noticed something beneath the woman’s leg, but the woman snapped at her to stop bothering her. I kissed Lily’s head and walked away. What I felt wasn’t anger. It was shame. I had paid $410 for those seats and surrendered them in less than two minutes because I didn’t want to cause a scene.

About ten minutes after takeoff, the seatbelt sign switched off. Then Lily’s voice carried through the cabin. She calmly told the woman that her mother had taught her not to embarrass people publicly, which was why she had tried to warn her quietly. The woman told her to keep quiet. Lily wasn’t frightened. She reached into her backpack, pulled out something, and stepped into the aisle. Then she held up two boarding passes and asked one question. Suddenly, passengers in rows 9 through 16 stopped talking.