duennaship

noun

1. (uncountable)The role or status of a duenna.

   “Mademoiselle Lange, who was an orphan, lived alone under the duennaship of a middle-aged relative, a penniless hanger-on of the successful young actress, who acted as her chaperone, housekeeper, and maid, and kept unseemly or over-bold gallants at bay.”