What is the author's style in Knowledge of Angels by Jill Paton Walsh?

Knowledge of Angels is sometimes billed as a young adult novel, but the prose and content are entirely suitable for adults. Walsh writes in straightforward, somewhat formal prose that is appropriate of the novel's medieval setting. She takes long passages to describe in detail the island's topography and its people, giving the reader a strong sense of what this fifteenth-century island is like. She avoids flowering and overblown writing, providing sometimes-understated descriptions of events and conversations that allow the reader to fill in meaning. Walsh simply relates the events of the novel, rarely pausing to offer commentary or explanation about what is happening. She does offer some insight into what characters are thinking and feeling.