Given that the one time Kaylee had ever attempted to even hold a gun had resulted in her shrinking back into the ship, cowering from the gunfire, and watching River take out three men with little more than a glance in their direction and three well-calculated shots, Kaylee still wasn't sure about firearms of any kind. The idea of taking another life, even that of one of an illusion, didn't stick well with her at all.

"Wouldn't want to put that on ya, Billy. Done enough for me already, 'sides."