Thanks very much for the post Poche! This is from that famous 1957 interview Sr Lucy gave to Fr Fuentes:
Prayer and Sacrifice and the Holy Rosary
Sister Lucy told me: "The two means for saving the world are prayer and sacrifice."
Regarding the Holy Rosary, Sister Lucy said: "Look, Father, the Most Holy Virgin, in these last times in which we live, has given a new efficacy to the recitation of the Rosary. She has given this efficacy to such an extent that there is no problem, no matter how difficult it is, whether temporal or above all spiritual, in the personal life of each one of us, of our families, of the families of the world or of the religious communities, or even of the life of peoples and nations, that cannot be solved by the Rosary. There is no problem I tell you, no matter how difficult it is, that we cannot resolve by the prayer of the Holy Rosary. With the Holy Rosary we will save ourselves. We will sanctify ourselves. We will console Our Lord and obtain the salvation of many souls."