They were at Kacy's front door (who looked like that) and loaded her gun

she shoots them all one by one, in the lungs specifically. Takes two minutes to die from a bullet to the lungs.
“Wait, before you die, I have a request. Tell the devil I said hey… I actually don’t care but it’s a cool thing to say right… ok give me the silent treatment then, it’s not like I liked you girls anyway.”
I had fun with this. Because I can.