Amusing, and illustrates precisely the false logic used to undermine gun-control. The question is not, would the dead woman be alive if she'd had a gun (my own view is that 80% of the time, she probably wouldn't have had time to pull the gun and shoot it), but, was the dead man really a rapist?
Furthermore, if the maximum penalty for rape is (say) lifetime in prison, what gives a woman the right to summarily execute men she is afraid of, or over-possessive fathers the right to murder kids whom they suspect of taking advantage of their innocent daughters?