My wife is heavily armed and trained in how to use the weapons I have provided her. My instructions to her have always been empty the magazine into the son of a b#tch, then call 911 and act hysterical.
My Wife has been given the same set of instructions and a familiarization course with all of the types of weapons we have in our house.
Her faves are a .410 and my S&W 19.
You need to tell her to count her rounds as shooting. She should save one round for the absolute necessity of in the head for the scumbag.