This was in England, so probably not a huge risk there. Odd that if you kill a burglar in your own home with shotgun you get sent off to prison, but one can walk into someone else’s home and kill them and they get off.
Most likely, if the killer was not sympathetic and the victim was not loathsome, it wouldn't have happened...
In Britain, you will find that many murders are given the verdict: misadventure. Seriously. When I lived there, a man from the south of England drowned his wife up in the Lake District. He then reported her missing. When her body floated up and was recovered, they put the pieces of the story together and figured out he killed her. And many people just said ‘well, she nagged him’. And excused it. I don’t remember that he had to do any time for the murder.
Oh not this again.