I disagree, Lambchop. I think it's huge. Casey named ZFG as the babysitter who took Caylee. Z?G is not that person, she should not be able to pretend to be that person in order to file suit. The police question lots of people during an investigation, that is not a valid reason for all those people to sue.
Casey did not publicly accuse Z?G of anything so she had no obligation to publicly clear her. I fail to see where any pressure was put on Z?G. If anything, her situation improved, she was given a total makeover, received donations, and received many offers of employment according to WESH. I wonder if she took one of those jobs. Probably not, it would be hard to continue playing victim if your life had improved as a result of the 'defamation' you're suing for.