Now that I'm thinking more along these lines........
The house was in Cindy's name, so the mortgage obviously was, too. Do people still take out life insurance with their mortgage that pays it off if the home buyer dies? When I bought a place back in 1978, I had the life insurance provision attached to my mortgage. I purchased my recent home for cash, no mortgage, so I'm not sure if that's still offered. Could be Cindy was insured so that her policy would directly pay off her mortgage. Then if she had a will, she could have left the house to GA, LA, and KC or just to LA and KC, or even included Caylee in there. Maybe KC thought she could get LA to sign over his share to her or she could pay him rent, or he'd let her go with no rent at all. Who knows how she thought?
Neckbreaking seems extreme for Caylee. How would she explain that? I find it difficult to believe she'd try to kill her parents by breaking their necks? They could both overpower her, I'm sure.
Now chloroform is more likely the choice, no matter whom she was thinking of doing away with. Or maybe she was just pipe dreaming and considering several ways to bump off the family.
Obviously she wasn't thinking far ahead. How was she going to afford electricity, junk food, cell phones, and the internet on her non-existent salary? Obviously Amy wasn't going to fully support KC after moving into the house, was she?
It's not unusual to have life insurance on children. My parents bought one for me when I was an infant and I still have the policy - paid off long ago. Back in the 1940s and 1950s, people did buy insurance on their children because many people remembered their own parents and other relatives losing children at a young age and the financial burden it put on the family.
I also took out policies on my children, and we bought a family crypt before I had children, and when my son was 16, we used it for him. Sometimes the unthinkable happens and having that policy saves a family from going deeper into debt, especially when a child has been ill for a long time and the family has stacks of medical bills. Yes, in many cases, grandparents can take out policies on their grandchildren, it depends on the insurance company.