The aim of this paper is to carefully analyse the rewriting process that Maria Aurèlia Capmany did of her short novel Traduït de l'americà (1960, written 1959) to transform it into the novel Ves-te'n ianqui o, si voleu, traduït de l'americà (1980, written 1979). There is, therefore, a process of «lengthening», of the original text that doubles its length. Based on the studies of French genetic textual criticism or the Italian variants and, above all, the contributions of general studies on intertextuality and Gérard Genette's studies on hypertextuality, this paper shows the resources that have allowed a change of subgenre (from the short story to the novel), the modification of the narration (the changes in the typology of the autodiegetic narrator) and the modification of the text (the structure, with the segmentation into even and odd chapters) as well as the innovations in the story (appearance of new characters and new motives). The conclusions take stock of the consequences of such remodeling.