You don't have to budge on the house... The FT isn't a lawyer and neither is your wife... period.
Just maintain that it is your home and you will not move out before you have to move out... You don't HAVE to talk about that for 59 minutes.
I would just say "if there is nothing further I have a household project I am behind on that I would like to put some time into..." and get up to leave...
If she gets nasty just bring up the sex chats and the OM in your own home and tell the FT... not your wife, but the FT that
My wife doing that in your own marital home was incredibly disrespectful so I put a stop to it. Neither of us should have to tolerate disrespect in our own home like that.
I am not a door mat and either is she... I am going to honour my commitments to the letter until we part ways. I am not asking her to do anythign I am not doing myself.
I have been civil, cooperative, and even tried to save this marriage. I will not have an ugly divorce.
I will not be disrespected and I will not be pressured out of my own home. I am honouring my commitments and cooperating. All I ask is that she reciprocate.