This is what Wikipedia says about her:
Cissy van Marxvelt embarked on her literary career by writing articles and stories for Dutch magazines. In the year she married, she published the first book in what was to become a series of novels about a headstrong girl, Joop ter Heul. The books, similar in theme to Louisa May Alcott's Little Women, contain many diary entries and letters. They chart the fortunes of Joop, her sister and her school friends, from girlhood through marriage. The series consists of five volumes:
The High School Years of Joop ter Heul (1919)
Joop ter Heul's Problems (1921)
Joop ter Heul Gets Married (1923)
Joop and Her Boys (1925)
Joop ter Heul's Daughter (1946)
Van Marxvelt's Joop ter Heul novels for teenage girls had a notable influence on the writings of Anne Frank, who addressed her diary letters to an imaginary friend named Kitty. Anne Frank scholars, as well as Anne's friend Kitty Egyedi, are united in their belief that Frank's Kitty was based on a character created by Van Marxveldt: Kitty Francken, a friend of Joop's and a frequent recipient of her letters.
Five of Marxfeldt's books and two of her popular Joop ter Heul books were published before 1923 and are thus in the public domain. I thought about releasing an English version, deliberately stressing the tie with Anne Frank. But alas, as best I can tell, nothing she did has ever been translated into English. Of the 130 editions listed in WorldCat, all but about five are in Dutch. The others are in Fresian.
http://www.worldcat.org/search?q=au%3AM ... first_page
Would anyone know what this is so? Are the stories so "Dutch" that no one else can appreciate them? I have trouble believing that. And there must be a lot of people around the world who're interested in Anne Frank and would love to read books she liked.
Maybe there's an opportunity there for someone who knows Dutch and can get the permission of her literary estate to introduce her to the English-speaking world and perhaps other languages.
Contact me via Literature and Latte if you're interested. I know no Dutch, but I'd be happy to help with the project.
--Michael W. Perry, Inkling Books