If someone is doing/about to do bodily harm to you, you are allowed to defend yourself. She wasn't killed for breaking laws.
The car wasn't aimed at him, it was slowly turning away, it didn't hit or touch him, his hand held phone jolted as he fired. He was seemingly fit and unharmed as he stomped away angry after firing three shots.
He moved into firing position as he didn't want her to leave and wanted to shoot her to stop her.