[2] She focused on expanding services for the children, securing funds to build additional patient and operating rooms, acquire medical equipment, and construct a convalescent center.

[1] Her beatification began when the current superior of the children's hospital, Emilia Paternosto, was told of "divine favor" some had received when praying to De Angelis.

Paternosto motivated the beatification process in 1985, and the following year the Archbishop of La Plata, Antonio Quarracino, opened the case on the diocesan level, granting De Angelis the title of a Servant of God.

In 1992, after claims by a mother that her daughter with spina bifida was able to walk after intercession from De Angelis, a team of doctors examined the evidence and the Vatican concluded the healing was "scientifically inexplicable".

[7] In 2001, De Angelis was declared to have lived a life of heroic virtue and was granted the title of a Venerable by Pope John Paul II.