How did Kirsti react to the blasts in number the stars?

In "Number the Stars" by Lois Lowry, Kirsti reacts to the blasts from German gunfire with confusion and fear. She initially does not fully understand the seriousness of the situation, as she is still a young child. Instead of grasping the gravity of the events unfolding around her, she expresses her concern over trivial matters, such as her missing shoes, highlighting her innocence amidst the chaos. Her reaction underscores the impact of war on children and their limited comprehension of danger.