 Her first romance, "Almagro", appeared in 1837, followed by "De graaf van Devonshire" ("The Earl of Devonshire") in 1838; "De Engelschen te Rome" ("The English at Rome") in 1840, and "Het Huis Lauernesse" ("The House of Lauernesse") in 1841, an episode of the Reformation that has been translated into many European languages.These stories, mainly founded upon some of the most interesting epochs of Dutch history, betrayed a remarkable grasp of facts and situations, combined with an undoubted mastery over her mother tongue, although her style is sometimes involved and not always faultless.Ten years (1840–1850) were mainly devoted to further studies, the result of which was revealed in 1851–1854, when she published a series of three novels dealing with the first Earl of Leicester's adventures in the Low Countries.