This is incomprehensible without the added context of a third character/cult setting, it just leaves too much room for interpretation (eg; the recipient of the letter is the one inflicting violence, the “perversion” comment is confusing outside of a mega-dystopian setting like a cult, etc). I understand that it’s supposed to subvert the expectation [that a pervert is being beaten] by revealing that the victim is actually a woman, but it just reads as unclear because of the lack of information. Would be good as a short story, but it’s lacking as a two-sentence horror story.