Never having been shot in the head, I'm going to give her a hall pass on both and her reasoning and her opinions on gun control. I don't have to agree with her to do that.
And that's a perfectly good and respectful way of attacking her ethos
. She has been so personally effected that her arguments lose credibility. But we don't have to make the point with a sledgehammer.
I have heard a former prosecutor (now a judge) often make a similar point very dramatically. If the mother of an accused criminal testifies for the defendant during trial, the former prosecutor would emphasize, "NEVER question Mama!" While that may be a bit of a stretch, the point is that most folks won't give Mama's testimony much weight but we will only evoke sympathy for her (and the defendant) if we are confrontational with her.