Sister Lucia entered the Carmelite convent [of Coimbra] on the same liturgical day that she was born—Holy Thursday. It was also the Feast of the Annunciation [25 March 1948], and now also the Solemn Profession of a sister, [so when Lucia entered as a new member of the community, everything] was absorbed by the Solemnity of the day.
In the Easter Triduum, the silence is more profound, making it more desirable to adore and contemplate the mystery of the Passion, Death, and Resurrection of Our Lord, Who for our sake became man and suffered death to save us from sin and death.
After Mass, Sister Lucia, in the company of Mother Prioress, was given her cell dedicated to the Immaculate Heart of Mary. Centered on top of the door was a small frame which read: ‘Immaculate Heart of Mary’, and then a sentence addressed to the inhabitant: ‘My Immaculate Heart will be your refuge.’
This sentence was at eye level and she read it every time she entered her cell. It would be a heavenly melody in her heart during the 57 years she lived in Carmel.
On Easter Monday, March 29, she wrote to her Superior [from the Sisters of St. Dorothy] in Tuy, Mother Cunha Matos, telling her of her joy:
As of right now, you know that on Holy Thursday morning at 5:30 a.m. I entered the Carmel of Coimbra, by the arrangements of the Bishop here, who came on this day and at that hour to assist in the Solemn Profession of a Sister. I enjoyed it very much and I am very well and extremely happy.
My name is Sister Mary of the Immaculate Heart, what a beautiful name, is it not? Far more beautiful than Sister Dores [Sister Sorrows], don’t you think? Here I found a small group of lovely sisters; whenever I encounter them I have the impression of meeting Saint Teresa. The name was chosen here by the Bishop.
Servant of God Maria Lucia of Jesus and the Immaculate Heart
Chapter XVI, Religious Carmelite
of St. Teresa Coimbra Portugal, C 2015, A pathway under the gaze of Mary : biography of Sister Maria Lucia of Jesus and the Immaculate Heart O.C.D., translated from the Portuguese by Colson, J, World Apostolate of Fatima USA, Washington NJ.