Anna Maria Redi was born in Arezzo on 15 July 1747. She attended the monastery of Santa Apollonia in Florence as a pupil until 1764.
Decisive for her vocation was the inspiration attributed to Saint Teresa of Avila, thanks to which she chose Carmel. She entered the Carmelite monastery in Florence on September 1, 1764 and took the habit of the Discalced Carmelites on March 11, 1765, taking the name of Sister Teresa Margaret of the Heart of Jesus.
The second great inspiration of his life was the passage from the first letter of John, "God is love" (1 John 4:16) and he tried to live by this concept.
She then devoted herself to prayer and to assisting her elderly sisters until, very young (not even 23 years old), she died of peritonitis on 7 March 1770. Her body gave off a sweet perfume and is still preserved incorrupt today in the church of the monastery of the Discalced Carmelites in Florence, where she was buried.
She was canonized by Pope Pius XI on March 19, 1934.
