What is the author's style in Year of Wonders by Geraldine Brooks?

The entire novel is written in a first person point of view, that of Anna Frith, the central character. Accounts of past events Anna has not witnessed are shared by other characters, such as Elinor and Michael Mompellion. The book is told as a recounting of surviving the Plague. In the epilogue, the novel switches from past to present tense to give the sense that this is the moment from which she is sharing the story.