What is the author's tone in the autobiography, Upon the Head of the Goat: A Childhood in Hungary 1939-1944?

Despite the awfulness of Piri's situation, the author writes with a measured detachment. This is perhaps a combination of an intentional journalistic objectivity—to make a record of events without emotion or personal investment "getting in the way" of the telling—and also the fact that the author is writing many decades after the events, and so she has achieved a certain perspective (time heals all wounds).