In her books La leccion de anatomia and Daniela Astor y la caja negra, Marta Sanz (1967) carries out a thorough analysis of gender construction and sexual identity of the women who were teenagers and grew up during the Spanish Transition. Her belief that "our identity is the result of a communal story" has led her to examine gender construction from a dual perspective: on the one hand, she has accomplished a personal inquiry through an autobiographical text; on the other, she has tried to demythologize the false collective discourse of sexual liberation during the transitional "destape." This article analyzes how the literary protagonists assume traditional female roles, harmful to women's liberation, and how they can embody, on the contrary, a new model in terms of sexuality, maternity, and gender roles in the core of their families and couples. In short, we study the original ideological and literary proposal of an author who advocates for the "desnudo" as an alternative counter discourse to the hegemonic discourse represented by the "destape."