According to Saint Padre Pio, Mary is the Echo of God

She is the "echo", the echo of God who faithfully follows the Master's will. Thus all graces go through the hands of the One who carried out those wishes herself, in full. Saint Pio called her: "Abyss of Grace, Incomparable Masterpiece, and Woman Clothed in Light." The Light of God flows into her and she - reflecting like a mirror - sends it back out onto humanity. "O Mary, Mother and salvation of the infirm, support, protect and console the sick; make hospitals bloom with flowers and give this ravaged world true peace, and the Catholic Church the triumph of your Son."