Jacoba Berendina van Heemskerck van Beest (April 1, 1876-August 2, 1923) was a Dutch painter, stained glass designer, and graphic artist.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Jacoba_van_Heemskerck

Composition No. 18 by Jacoba van Heemskerck
1915 / Oil on canvas / 34 1/4″x30 1/2″ / Kunstmuseum Den Haag, Netherlands

Jacoba van Heemskerck on Artnet: http://www.artnet.com/artists/jacoba-heemskerck-van-beest/

Further reading:
https://modjourn.org/biography/heemskerck-van-beest-jacoba-van-1876-1923/
Google translation of Kunsthalle Bielefeld: Jacoba van Heemskerck
https://thehistoryofpaintingrevisited.weebly.com/jacoba-van-heemskerck.html