What does the Misfit mean at the end when he says about the grandmother, “She would have been a good woman . . . if it had been somebody there to shoot her every minute of her life”?

A Good Man is Hard to Find by Flannery O’Connor

Write a two-paragraph (5-8 sentences per paragraph) response to one of the prompts below.

What does the Misfit mean at the end when he says about the grandmother, “She would have been a good woman . . . if it had been somebody there to shoot her every minute of her life”?
Characterize the Misfit. What makes him so? Can he be written off as simply insane? How does the Grandmother respond to him.

http://xroads.virginia.edu/~DRBR/goodman.html