Petronella McGovern has written multiple books, including "The Last Trace", "Every Time She Wakes", and "The Liars", as well as "The Good Teacher". Some of these books have been reviewed, and McGovern has participated in conversations about her work. The titles and focus of her books and discussions suggest she may write about themes of loss, identity, or human connection, but the specifics of her work are not clear from the available information.