What stance does the story encourage us to take in regard to the grandmother?

Though the reader witnesses the violent death of the grandmother at the hands of the Misfit, it is unclear how the reader is meant to react. Is the reader is meant to feel sorry for the grandmother, or does the grandmother get what she deserves?
O'Connor's depiction of the murder scene at the end of the story is full of horror. Additionally, the Misfit's comment to his henchman about the murder is bone-chilling in its heartlessness and immorality: " 'She would of been a good woman,' The Misfit said, 'if it had been somebody there to shoot her every minute of her life.' "
Yet, the depiction of the grandmother throughout the story as a proseletyzing busybody might lead the reader to feel some internal conflict about her death. This ambivalence towards the grandmother is the point of the story. O'Connor presents her as a character who is outwardly good, with her churchgoing ways, but somehow still deserving of punishment—a complex message from a complex writer.