Mr. Justice William Grant, in his instructions to the jurors, told them MacKenzie was described as happy go lucky, nice and generous so they can infer such a person would be less prone to violence.
He also says they must determine if she reasonably feared death or serious injury at the hands of her common law partner Pat Thomas who was stabbed to death.
The judge pointed out there was evidence of a violent relationship and this may shed light on MacKenzie's state of mind on the night of the stabbing.
