The aim of this paper is to analyze the hidden keys in Ana Maria Martinez Sagi and Elisabeth Mulder's poetry written before the Spanish Civil War. Likewise, letters, reviews and other types of texts and paratexts that accompanied their works will be studied and will help us to better understand the context in which the poems of Caminos, Inquietud, Sinfonia en rojo and La hora emocionada arose. The admiration that both authors professed for each other during part of their lives, as well as their social and literary concerns, will pave the way for other women's transition to modernity.