Venerable Mary of the Sacred Heart Glowrey's Cause was initiated in India by the Bishop of Guntur.  (Mary spent most of her life in India in Guntur). Her Cause was promoted by the Congregation of Jesus Mary Joseph, the religious society to which Mary belonged. 

Mary Glowrey was accorded the title Servant of God in 2013, which is the title given to a person whose cause for beatification and canonisation in the Catholic Church has been initiated. Following the opening of her Cause, investigations into her life and virtues, and her reputation for holiness, were undertaken in the dioceses in which she lived in India and Australia.

The results of the investigations were summarised in a document known as a Positio super virtutibus ('position on the virtues' or positio), an historical account of Mary Glowrey's life and her virtues. The positio was submitted to the Dicastery for the Causes of Saints at the Vatican.

On 21 November 2025 Pope Leo XIV issued a decree which recognised her life of heroic virtues and thus accorded her the title Venerable. She is just second Australian-born person to receive this honour.

In Australia the work of studying and promoting Mary Glowrey’s life and legacy is undertaken by the Mary Glowrey Museum and her Cause is supported by the Catholic Women's League of Victoria and Wagga Wagga and the Archdiocese of Melbourne.

After a Cause for Canonisation opens, a candidate is granted the title Servant of God.

Investigations are documented and a positio is prepared. The positio is submitted to the Dicastery for the Causes of Saints at the Vatican. If the Dicastery, after examination, finds that the heroic virtues of the Servant of God are established, the Pope may issue a decree confirming that she practiced the virtues to a heroic decree. The Servant of God may then be titled Venerable.

Any miracles (usually a healing considered scientifically inexplicable) attributed to prayers for the intercession of the Venerable are then investigated. If a miracle is established, a person may be beatified, and accorded the title Blessed by the Pope. If another miracle is established, the Blessed may be canonised as a Saint by the Pope.