It was at least something to be addressed in correspondence by the great bishop of Rome as a Coworker; and there are many letters extant written by Gregory to abbesses in various parts of the Western world.
"Women of Early Christianity Woman: In all ages and in all countries, Vol. 3 (of 10)"
Alfred Brittain Mitchell Carroll
In sweet remembrance at the Three Holy Shrines of your labours of love for His Cause, I am and remain your brother and Coworker in His service.
"The Light of Divine Guidance (Volume 1)"
Shoghi Effendi
But since I, as occupant of the chair of astronomy and ancient and modern history, shall probably be thrown in direct contact with our new Coworker but little, I anticipate no personal embarrassments, albeit I shall endeavour to hold her at a distance, ever and always maintaining between us a barrier of courteous aloofness.
"Fibble, D. D."
Irvin Shrewsbury Cobb