Even as Maddie is starting to live her dream of flying planes, she can’t ignore the horrors of the war. Meeting Theo forces her to remember Theo’s shot-down brother, and to remember more broadly that she has this job because male pilots are dying every day. And Theo’s note that the boys give female pilots Lysanders, and that it’s not fair to give Maddie a broken one, implies that Maddie’s first ferry trip was something of a test. She’s clearly passed it, though, proving that she is qualified regardless of her sex.