ThatGuy = pure http://en.wikipedia.org/wiki/Ad_hominem
In all seriousness I don't agree with many of Jonahirt's ideas either, but shameless personal attacks like this are low, cheap, and frankly, irrelevant. You have no good reason to insult him.
Anyway, back OT: under normal circumstances I wouldn't blame the OP for being angry with this woman, but it really depends on what you said to her before she died.
So it's not irrelevant or cheap. How is what I said about him an ad hominem? Tu quoque is what I say.