The police would have a much easier time investigating missing children if it was as easy as checking if there is a documented history of being soulless and if not, they can't be lying about what happened.
I think a psychopath or a sociopath is the closest thing in scientific thinking to a soulless, heartless demon, and everyone who killed their children and lied about it cannot be diagnosed as either. Several violent criminals have had relatives and friends come out and say good things about them. No way he could have done such a thing, she's not like that, he's a good dad, she did a kindness to someone back in the year of the cub so it shows she's innocent, he was a good kid and didn't get in trouble too muc, she seemed so normal and I didn't see any warning signs.... Some of it might be due to denial and other defense mechanisms or desperate attempts to save the perp from being convicted or the perp might have faked a facade of goodness but I think some of it is probably true and there has been some good in the history of people who also did very bad things. Some modern religions are adamant that people have the capacity to do both.
That's why a human interest article showing that someone has a good side or a bad side is not imo proof of guilt or innocence, just that they have a good or a bad side. It's often a matter of who you get to talk to you. You could find people in my past who have negative things to say about me and if you talked to my dad he would probably say he likes me.
Alcohol and drug abuse are IMO one thing that can change parents who appear so normal. Someone I know was always nice and social, had a great sense of humor and a smile on his face and everybody liked him but he was a very mean and threatening drunk within the four walls of his home and there was some DV. If Lisa's parents are involved IMO alcohol could be a factor. I see it as a potential warning sign that DB said she wants her adult time two or three times per week and apparently thought nothing of getting plastered in front of children with no sober adult available. It is IMO an irresponsible action that is in stark contrast with the mother hen image, and if it's a regular thing I would worry a lot, particularly with a history of addiction problems in the family.
I don't think lying about one's wrongdoings is necessarily a sign of having no soul. Maybe just a cowardice. People documentedly go to absurd lengths to avoid having to face the responsibility and the consequences of doing minor things that are not a crime whatsoever. There is a thread in the Bizarre forum about a guy who called LE to report a burglary in progress when his girlfriend was about to see another female in his home. He was not about to be imprisoned for having a bit on the side but would he stand up straight and face the music? No, too scared of the old lady I guess, better lie to LE because the consequences are not nearly as scary. :waitasec:
Concealing a honest accident is not something that parents would be likely to do IMO (because why would they?) but some might prefer to try to conceal severe (drug related?) negligence, child abuse or other criminal activity, fearing the loss of their freedom, relationships and good standing in the community, the custody of remaining children etc. over doing the right thing.
I think living a lie and concealing your crime absolutely may lead to losing your soul eventually. If someone started out with a smidgen of conscience but chooses to live a lie and never take responsibility for what they did to their child, and pretend every day to not know the things they know, they might have to kill off that part of their soul that keeps telling them it's the wrong thing to do, to cope with the dissonance between the moral values and their actions.