The fact that the woman was engaged in infidelity with her husband should have been an afirmative defense against the deeds of that day.
At least thats the way it used to be.
I agree the fact that this went to trial is indeed another example of the decline of civilization.
Should infidelity be a reason for ending a marriage? Of course. Should it warrant the death penalty? I don't think so. It is wrong. It's a betrayal of mate and family. I just don't think it's worth killing someone over. That person, by their actions, has demonstrated that they aren't worth the trouble. Write them off...