The most likely source of your specific phrase "the indecent woman 1991" is a that has a similar ring. There are two prime suspects:

If you find a bootleg (check the usual cult film forums), go in blind. Do not expect a plot twist. Expect a mood. Expect 89 minutes of a woman refusing to perform femininity correctly. Expect to be confused, then uncomfortable, then strangely liberated.

The Dutch Erotic Thriller You’ve Never Heard Of: Revisiting 1991’s The Indecent Woman

: It is noted for its distinctive "sepia-tone drenched" aesthetic and somatic classical music, which elevate it from a standard soap opera into a somber meditation on lust and deceit.

The inciting incident—her discovery of her husband’s infidelity—does not spark a standard revenge plot. Instead, it triggers a psychological break. Maria decides that if the moral contract of her marriage is void, she is free to rewrite her own moral code. She dives into a clandestine affair with a much younger, rougher man. This is where the film distinguishes itself from cheap soft-core erotica. The affair isn't portrayed as romantic or even purely lustful; it is portrayed as an addiction. Maria becomes a slave to her own liberation, and the film interrogates whether this newfound freedom is actually a trap.

Let’s be honest. The is a fortress. To get in, you need The Dark Knight levels of fan voting or Shawshank Redemption levels of universal adoration.

Reception and critical appraisal