What really bothered me about the final was....(Spoiler)
....how Marcella gives CPR to Jason and gets him breathing again, and then the ambulance comes and one assumes he's taken to hospital. Well at this stage, he could have died in the ambulance on his way to hospital, what does she know, right? But she doesn't go with him to hospital, I think she goes to the police station (fair enough)....but even hours later she still doesn't go to the hospital, or asks about Jason or nothing, because you see her last scene at home going to bed, when the most LOGICAL thing would be for her to EVENTUALLY go to the hospital to be with Jason who must have received a life saving operation or to the morgue where his body would be if he had actually died from his wounds. Pretty illogical, no? .
She also didn't inform their children that their father was fighting for his life. [nope]
And Marcella's sudden indifference (?) about Jason's fate BOTHERED ME.