 The archbishop of Naples, Sisto Riario Sforza, having understood that the nascent Neapolitan foundation had its own personality confronted with that of de Montaignac, established that the two institutions were to be separated.In 1874, Volpicelli’s foundation received the approval of the archbishop of Naples and was named the "Pia Unione delle Ancelle del Sacro Cuore" (Pious Union of the Maids of the Sacred Heart).However, Catherina felt the need to receive approval also from the Holy See.