This is her brief Wikipedia article, "Louise Hollandine of the Palatinate (18 April 1622 – 11 February 1709) was a daughter of Frederick V, Elector Palatine and King of Bohemia, and Elizabeth Stuart.
Louise Hollandine was a talented portrait painter and graphic artist, a talent that she shared with her brother Prince Rupert. She was student of Gerard van Honthorst and painted so ably in his style that some of her works were attributed to him. To the dismay of her Protestant family, she converted to the Catholic faith and fled to France. With the support of Louis XIV, she became Abbess of the Cistercian Abbey of Maubuisson. The princess is considered an "amateur". The portraits she painted are often in the Baroque painting style of Honthorst, but there are exceptions, which were likely not commissioned. Her works were generally kept within her family, and some can now be found in German museums."