identify this movie - Attractive Hispanic woman who finds pleasure in murder scenes

This sounds like Curdled (1996). Here's the IMDb plot summary:

Gabriella, a Colombian immigrant, is obsessed with understanding violent crime. The current string of murders by "The Blue Blood Killer" of affluent Miami socialites provides her with fodder for her scrapbook of death. She lands a job with a post-murder cleaning service and during a Blue-Blood clean-up job, discovers evidence that police have overlooked.

However, the ending is not quite as you remember it; either there is another remarkably similar film or you'll have a little surprise when you watch it again.

• Next cinema history - Was Dr. Strangelove originally intended to be serious?
• Previous phrases - Good Luck **in** all your endeavors' versus Good Luck **to** all your endeavors'