The Devil-s Bath ((full))

If you share your goal, I can provide a more specific analysis.

As despair sets in, Agnes falls into a condition known historically as "melancholy." She stops eating, she cannot pray, and she feels an overwhelming sense of spiritual worthlessness. Trapped by the rigid Catholic doctrines of the era (suicide was a mortal sin that would damn her soul to hell), Agnes looks for a loophole. She learns of a grim superstition: if you commit murder and confess your sin before execution, you can be forgiven. Suicide offers no confession; murder does. The Devil-s Bath

The Witch , Hagazussa , Saint Maud , or The Piano (but if The Piano ended in a nightmare). If you share your goal, I can provide