There are a million holes in Wendy Murphy's nutty story.
She said that 'because Casey told people about the smell of dead animals in her car, that makes Wendy think that casey was not the guilty party. ' [ which is stupid, because it makes perfect sense WHY she would tell people that, in case they come across her car.] So wendy says Casey really did not know WHY her car smelled like dead squirrels, and probably did think her father used the car and hit some roadkill. ok.
Okay, then in the next breath, she says Casey DID know what happened and was covering for somebody. So which is it Wendy?
Then the brilliant WM says that both sides are lying about the death on the 16th. And the jury will obviously question both versions and realize that the child really died on the 17th, with some unknown person who was driving Caseys Pontiac. Oh, and Casey was willing to overlook the kidnapping and murder, and go about her business, as if all was fine. WM has not explained that part yet though.