Pope Pius IX authorised the public devotion to the Marian title on 21 September 1851 and designated the 8th of January as its feast day of thanksgiving.

Under this Marian title, the Virgin Mary is designated as the Principal Patroness of Louisiana and the Archdiocese of New Orleans dating from a 13 June 1928 Papal bull from the Sacred Congregation of Rites.

The nuns established a convent and founded what is the oldest school for girls in the territory of the modern-day U.S., Ursuline Academy, which educated the children of European colonists, Native Americans, and those of the local Creole people, slave or free.

The response from President Thomas Jefferson is still kept at the convent to this day: ...I have received, holy sisters, the letter you have written me wherein you express anxiety for the property vested in your institutions by the former governments of Louisiana.

Mother Saint Michel, knowing that the Church was in distress in both her homeland and abroad, approached Bishop Fournier of Montpelier to request a transfer.

Bishop Fournier felt unable to afford the loss of another nun, as many had been killed or fled during the revolution, and advised Mother St. Michel that only the Pope could give this authorization.

"[1] Sending her petition on March 19, 1809, Mother St. Michel received a letter from the Pope Pius VII granting her request on 29 April 1809.

Marie Olivier de Vezin, made a vow to have a Mass of Thanksgiving sung annually should the American forces win.

The cultus of Our Lady of Prompt Succor was a devotion particular to the French Ursulines, which involved neither a miraculous apparition nor a particular message to engage the imaginations of the laity.

After Hurricane Katrina, prayers were made to Our Lady of Prompt Succor asking for the quick recovery of the damaged city and surrounding area.

The Servants sponsor the Traditional Latin Mass in honor of Our Lady of Prompt Succor, as well as the Byzantine Divine Liturgy, beseeching the Blessed Virgin Mary to intercede before Her Son for the conversion and sanctification of the United States and its protection of human life in all its stages.

When the statue of Our Lady of Prompt Succor arrived in the United States, Her first stop was Philadelphia, the home of its Declaration of Independence and Constitution.

They were given a tour by Ursuline nun Sister Angela Murphy, who mentioned she was praying to Our Lady of Prompt Succor for a confraternity in New York.

The Servants also pray for the custodians of the National Shrine and for holy departed souls, including those in the Ursuline mausoleum on their grounds, some of whom were part of the miracle in 1815.

In addition the Servants also promote devotion to Her Eastern counterpart, 'Theotokos, Quick to Hear' and offer the Canonical Hours daily, the Rosary, the Jesus Prayer, and pray for personal intentions requested, sent to ourladyofpromptsuccor.net.