I think that is what they were trying to show because Albert did have a conscience which is why he was upset with Mary and the music box, etc. I know when real parents I read about in the paper, had a child die and probably could have prevented it, they fell in pool, hit by car pulling out, etc. maybe a lit cigarette starting a fire, the judge usually thinks losing the child was enough pain. No fine or days in jail make that less.
I think many Christians try to forgive, at least with words first. As my priest said to me once, the feelings can come later, the words can be a start for many to heal. I agree, it would be very hard for me, but what punishment could there have been?
I didn't like this show, much too dark and I was tired of seeing Mary go through yet another heartbreak. Back then, people were used to losing family to illness and miscarriage, etc. but this episode was a little over the top for me, well acted, but over the top.