Scholastica, the venerable sister of holy father Benedict, as Pope St Gregory writes in his second book of Dialogues, was dedicated to almighty God from the time of her earliest infancy, and was accustomed to come to see her brother once every year.
A sudden downpour of rain
The man of God came down to see her at a place not far outside the portals of his monastery. Indeed, one day, when on account of a sudden downpour of rain which Scholastic a had obtained from God, and being night near at hand, the venerable brother could not go outside the house.
So it happened that they stayed up the whole night, regaling each other in turn with conversations about the spiritual life. At daybreak the holy woman withdrew to her own cell and the man of God withdrew to the monastery.
In the form of a dove
Behold, three days later, while sitting in his cell, he raised his eyes to heaven and saw his sister’s soul leave her body and enter heaven in the form of a dove.
Then Benedict sent his brethren to place her body in the tomb he had prepared for himself. Thus it happened that as they had been of one mind in God, the tomb did not separate their bodies.
– From: An Approved English Translation of the Breviarium Romanum, Burns & Oates, London, 1964