BTW, you are also taught the same thing just in case you get caught.
If she said anything about harming or killing him, that's his defense. Her behavior certainly indicates her intention to leave the premises ~ even if she has to hurt some one.
There's nothing she could say that could justify his attack, Her statements can justify arrest, restraint, incarceration.. but no words can excuse this attack. She could describe eviscerating him and his entire family and eating the entrails and this assault is still inexcusable - without action, not just words, on her part.
Her behavior certainly indicates her intention to leave the premises ~ even if she has to hurt some one.
And all he had to do was close the door to stop the deadly "attack of girl shoe flipping"
I'm sorry. I'm back to "Please don't tell me you work in law enforcement."