Have you tried playing with IMDb's Advanced Search engine?
tried! nothing close comes up, even spent countless hours browsing netflix's foreign movies :(
In that final scene, when she is crying hysterically over the killer's body, do you happen to remember if the undertaker had pinned a single carnation (white or possibly red) to the corpse's lapel?
If so, I'm fairly certain that I know the movie...
I'm trying to remain calm..... :) but nope, i can't remember if there was a flower involved in the last scene. but just the B&W photo insert during End credits. :)