zelatrix
A nun who oversees the behavior of young nuns.
An intelligent and active zelatrix should be at the head of each circle, or one zelatrix may have several circles under her care.
Where it comes from
Learned borrowing from Latin zēlātrīx (“female zealot; zealous female”). By surface analysis, zelator + -trix.
Adapted from the Wiktionary entry zelatrix (CC BY-SA 4.0).