No one ever looks at a nun’s face.” – JM Scott
Nuns are a curiosity today. In another time, girls for whatever reasons were given over to convents for a life of prayer or good works. If the candidates were young enough, notions of choice were probably very elastic. Vocations are few in the modern cloister - and few orders of good sisters would tolerate or encourage any coercion by families or sponsors anyway.
Nonetheless, the values in convents appeal to cynics...