When Osanna was thirty years old, she received the stigmata on her head, her side and her feet. She also had a vision in which her heart was transformed and divided into four parts. For the rest of her life, she actively experienced the Passion of Jesus, but especially intensely on Wednesdays and Fridays. Osanna confided these things in her biographer and "spiritual son," the Olivetan monk, Dom Jerome of Mount Olivet, as well as the fact that for years, she subsisted on practically no food at all.