BeanE
Inactive
That would be true for an intentional murder but what if it was an accident?
I don't think that's true for intentional murder, Ladytazz. There are a plethora of cases of murder where a family member would have gladly taken the victim, but the perp killed them anyway. And not just murders that are crimes of passion (rage) either, but planned murders.
In fact, Casey's motive may have been just that - that her mother wanted to care for Caylee.
Also, looking at the other things going on, such as Casey telling a number of people that in a week, her parents were giving her their house and she would be taking over the payments, Casey's motive may been complete autonomy. That is, no parents as well as no child.
Cayley was stealing money from her parents, her grandparents, her friend, and who knows who else. Money could have been a motive. No child, fewer expenses.