A women named Roni Lisenbe got in an argument with her boyfriend and it got physical, so she got her gun out and pointed it at him and he put the barrel of the gun against his own head and taunted her saying "what was she going to do", so she fired and a warning shot over he's shoulder and when he tried to grab the gun she fired again and got him in the stomach. She called the police herself and was at her front porch waiting for them to get there and arrest her.
http://www.myfoxdfw.com/story/21577222/woman-claims-she-killed-boyfriend-in-self-defense