St. Alphonsus Ligouri lived near the Poor Clare nuns of Nocera for the latter part of his life, and he frequently came for conferences and for Holy Mass.  His True Spouse of Jesus Christ might have been given in oral form to the Poor Clares before it was published as a book:
“Holy Communion infuses divine charity into the heart. Jesus Christ proclaimed that He came into the world for no other purpose than to kindle in our souls the fire of divine love.”                                                                                  - ch. XVIII, page 565