What story does annemarie think about on the path to the boat on number the stars?

page 104- Mama spoke quickly, her voice tense, "Annemarie, go into the house and get the small basket on the table. Quickly, quickly. Put an Apple into it, and some cheese. Put this packet underneath; do you understand? Hurry."

~An Apple, cheese, and the packet that Mr. Rosen forgot to take from Peter.