La Religieuse (2019)

Set in the 1750s, young Suzanne is dismayed when her parents send her off to a convent, expecting her to become a nun. She first resists the rules of the convent, but soon finds out that she is an illegitimate child, leaving her with no other choice than to pronounce her vows and suffer the consequences of her mother's sin. She soon wants to escape the religious path and tries to revoke her vows when the Mother Superior, who had brought her comfort and solace, dies. Her successor, Sister Christine turns out to be sadistic and cruel, inflicting the worst forms of humiliation upon her, such as depriving her of food and clothing. She is finally transferred to another convent, where she discovers another Mother Superior who develops an inappropriate bond with her.