How does Annmarie behave around German soldiers how does Kirsti why might the sister behave so differently?

Annmarie behaves with caution and wariness around German soldiers, recognizing the danger they represent and the serious situation in which she and her family find themselves. In contrast, Kirsti, being younger and less aware of the full implications of the occupation, displays a more innocent and carefree attitude, often treating the soldiers as if they were simply part of her world. This difference in behavior highlights the contrast between the innocence of childhood and the harsh realities of war, as well as Annmarie's protective instincts toward her sister.