Reflections in a Golden Eye
Most women in her situation would do the very same thing! They just wouldn't do it as well- or as often!
Reflections in a Golden Eye (1967) is a film directed by John Huston based on the 1941 novel of the same name by Carson McCullers.
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On a U.S. Army post circa 1948, a major who is an impotent, latent homosexual is married to an infantile birdbrain who never misses an opportunity to ridicule his masculine failings. He displaces his hostility by brutally flogging her horse and she retaliates by humiliating him before a houseful of guests, repeatedly slashing him across the face with her riding crop. She is also committing adultery with the officer next door, who's wife cut off her nipples with garden shears after the death of her baby. She has sought solace in the ministrations of her effeminate houseboy. The sixth character, coveted by the major, is a darkly handsome noncom, a voyeur and lingerie-fondler, given to nightly appearances as a peeping tom in the birdbrain's bedroom and daily sessions of horseback riding in the middle of the woods stark naked. Written by filmfactsman