What is the author's tone in The Orchid Thief by Susan Orlean?

The tone of the novel is often straightforward. The book is written from a journalist's perspective, telling events as they unfold and giving the appropriate background information and history. Rarely does Susan delve into an emotional outpouring with the strong exception of her trips into the Fakahatchee. Here, Susan changes the tone of her novel to convey the sheer terror, anxiety and anguish she feels each time she walks through the wildlife preservation.