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Use "instructress" in a sentence
"Plucky Girl Aviatrix's (plus pooch) plane nicking one girl rescue mission followed by boytoy and assassin instructress."
"A sure sign, Mrs. Hungerford thought, that she was feeling better; and she watched in secret amusement the sudden stiffening of the angular figure and the compression of the thin lips as the "instructress" looked fixedly out of the carriage window and vouchsafed no other reply."
"Under such an "instructress" it is evident that deportment, gesture, language, every act or omission in this mundane sphere, becomes, like"