Thus on March 27, 1942 Alexandrina began an absolute fast which was to last more than thirteen years until her death, her sole nourishment being Holy Communion which she received with deep devotion every morning. Initially she would vomit any food that she attempted to eat, and since she herself did not understand the grace at first, she like others thought her end was near, because obviously one cannot normally live without food for very long, and this cause her to cry out:
“Oh Jesus, my love, do not abandon the one who loves you so much! Oh days which never end! Oh Heaven which never approaches!" Turning to her relatives she groaned, “When you hear the bells sound for my death, go down on your knees, pray and thank Jesus and Our Lady for coming to take me.”
Initially, her desire for food and drink was very strong On 24 May, feast of Our Lady Help of Christians, after almost two months of absolute fasting “with a burning thirst and a longing for food”, Alexandrina cried out in anguish, “I sigh, I die, I long to satisfy my soul with the food of Paradise!”
As the months passed, news of Alexandrina’s fast spread far and wide. Crowds of pilgrims began to visit her, asking for her prayers. (
http://www.miraclesofthesaints.com/2010/10/miracle-of-eucharist-total-fast-from.html)