[Stephen_Zuckerman]

Well, Lunchbox, I'm not going to do you the insult of trying to tell you life's a pile of sunshine and daisies. I'm going to tell you, simply, that some people can't be saved. In this case, your friend will divorce the banshee within a year or two, and hesitantly look for your friendship again.

'Til then, you can either deal with the (there's not really a good word for a family forum here), or pop her one good enough that she stays shut up. The second one gets you on assault charges and seems to be against your personal ethos, so your only option is numero uno, or the alternate: Staying out of it entirely.

Sorry there's no more help to give, but... Well, there you go.