Her son.
He was hit by a car?
So she says but I doubt it. I don't see why she'd bring up the autopsy in such a manner. She must've hit him physically, accidentally killing him. Just check out the scene where she says he got hit by a car. You'd call her bluff. She's guilty and afraid. We've already seen that she beats him up and he suffers a minor heartburn. And being that obese, his arteries must've been clogged.
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