I do think, that if nothing else but for appearances, you should do this. Give her an audience, but preface it with "as soon as you start lying to me, this conversation is over."
And then follow up on that.
Then you can tell her family "I tried to talk to her, but she keeps lying to me, and I'm not going to sit there and listen to that -- it insults my intelligence, and it's incredibly disrespectful to our marriage."
NIIIICE!!
Yep, an opportunity to grant her an audience. It will be on your terms and you control the agenda. Oh, and if you want to really stir the pot... as soon as she starts lying again... simply hang up.
