Painter. She is remembered as a well-known Dutch artist of the 20th Century. Her art pieces were created in oil paint, pastels, watercolors, or etching, and she had a variety of subjects such as still lifes, landscapes, figures, cityscapes, architecture, animals, and after her husband's death, she was commissioned to do several portraits. She was a member of the Amsterdamse Joffers, which was a group of about a dozen women artists, which included Lizzy Ansingh, Jacoba Surie, Nelly Bodenheim, Therese Schwartze, and Maria Engelina van Regteren Altena. In 1912, this group received the name of Amsterdamse Joffers by art critic, Albert Plasschaert. The group met weekly in the last quarter of the 19th century to share ideas, paint and have art shows. These ladies were the role models for future Dutch female artists. After attending a primary French school and a German boarding school, she obtained a teacher's certificate. She had hopes of becoming a concert pianist but turned to having a career as an artist. In 1898 she studied a lo-drawing course at the Day School of Young Women and studied with Lizzy Ansingh in 1902. From 1905 to 1910, she studied at the Rijks Academy of Visual Arts in Amsterdam, where she was taught by many artists including August Allebe, and later Antoon Derkinderen. With her husband, Karel Westemdorp, she traveled Europe, Asia, Africa and the United States. Her husband was a collector of Asian Art and supported her art endeavors. While traveling she studied art, such as attending in art classes for several months in the Louvre in Paris. Unlike the other Joffers, she had a much more comfortable life style. She had several successful solo exhibitions with the last being 1967, which ended her seventy-year career at the Aemetle Exhibition Center in Amstelveen. She was the recipient of many honors and awards during her career: She received the Silver Medal at the DeVrouw Exhibition 1913, received the Willink van Collen Award in 1915, received the St. Lucas Prize in 1930, and received the Queen and the Gold Medal at the World Exhibition in 1937 in Paris.