Watch MoviestoWatch. Documentary about Nienke van Hichtum, Frisian author of the children's book "Afke's Tiental" and the time in which she lived at the beginning of this century. Nienke van Hichtum is the pseudonym of Sjoukje Troelstra-Bokma de Boer. She was married to SDAP politician Pieter Jelles Troelstra.