By the time the police got there, the dead body would have been hers - had she not had the gun.
What is the saying: “When seconds count, the police are only minutes away.”
We have the right of self-defense = and not to feel bad for taking a life rather than dying...she did not kill this man so much as he killed himself by his actions...This is a better outcome than her having to go through a year of more of trial - with him, no doubt, out on bail...and even if convicted, the specter of his getting out always hanging over her life. This way, it is over with. He is the cause of his death.
Absolutely true.