A Discalced Carmelite and abbess, her work is written in verse and prose and, mainly, it is a mystical production, based on her spiritual experiences.

Her production included Romance (poesía) [es] (romantic poetry), a type of poem characteristic of the Spanish, Iberian, and Latin American literary tradition, glosses, Christmas carols, redondilla [es], limericks, and theatrical work within the convent.

After the death of her mother, Cecilia continued her musical studies at the Monastery of Santa María la Real de las Huelgas, Valladolid.

Cecilia was considered the right nun to take charge of the Calahorra Convent in La Rioja, where, in the first elections, she obtained the position of prioress.

This was so much the case that one of her disciples, Sor Ana de la Trinidad [es], managed to become an expert in painting, poetry, mathematics, Latin, and music.

[8] The writings, in verse and prose, were similar in style to that of John of the Cross; "Transformación del alma en Dios" is an example of one of the nun's theological-spiritual compositions.

[6] Correspondence with her brother is revealed in them and this provides an understanding of the nun's poetic work as he was Cecilia's theologian and mystic.