he didn't kill Hardy himself and "left it to the Gods" it seems unlikely Alejandro would show her looking down on the decision. I felt that having the wife walk out of the frame shows him moving on. The only thing I think is ambiguous is whether he survives or not, but my interpretation is that it doesn't really matter. Whether he lives or dies he still fulfilled his purpose, and in the end when the camera zooms on his face it is showing his free soul.