mentrix

— Olga had indeed learned that the church had appointed certain days and seasons for fasting, but thought she had herself fasted in a fashion, she had never suspected that she was imitating Christ, and she had never been told that the oil was a necessary part of the observance. Anxious to please her new mentrix she tried to swallow the nasty stuff, but the flesh was weak and, moreover, rebellious; and thus the first experiment in religious discipline proved a failure.