How was she a "complete non-threat"?
Well, hindsight IS 20/20. Foresight? Not so much.
I think what Libertarian01 wants is for her to harm herself or someone else FIRST. THEN the officers would be justified. Personally, I'm not waiting for it to go "bang" to find out whether its real or not. I guess we are following the "wild west" white hat rule #1: the good guy never shoots first.
So, Libertarian01, you have a guy with a "gun" in his hand as he walks up to you in your back yard. You waiting for him to fire it before you feel justified in shooting?