O'Keeffe's finest paintings date from the 1920s and 1930s, however, most critical attention has concentrated on works painted in the first decade of the 20th century, notably Roses and Arum Lilies of 1906, now in the Auckland Art Gallery, and The Model at Rest of the same year, in the Dunedin Public Art Gallery.
The majority of O'Keeffe's notable works were created in the 1920s and 1930s, but her most critically acclaimed pieces are those from the early 20th century, such as Roses and Arum Lilies of 1906, now part of the Auckland Art Gallery collection, and The Model at Rest of the same year, also displayed at the Dunedin Public Art Gallery.