At the end of the movie, Karen attempts to burn the house down while she is still trapped inside. She doesn’t die there, but it’s implied that she intends to.
A child gets drowned by his father who flies into a violent rage. Prior to this there’s no indication that the parents were abusive, but no evidence that wasn’t the case either.
A housewife is killed by having her neck snapped, and she struggles to breathe for a short time before dying. Her ghost frequently mimics the resulting death rattle sound