QS you need to make it clear to her parents that YOU re NOT going to sit in that home while she has sex chats with other men on the comptuer and belittles you... You understand she's ILL, and you ARE trying to make the home a better place and you are NOT doing ANYTHING to her that is disrespectful...
I would also add that someone who's willing to engage in sex chats in SECRET with someone else's WIFE while she's ILL is NOT a "stand up guy" and its downright creepy.. STALKERISH CREEPY...
I would emphasize that your wife's ill and this guy clearly doesn't give a rats ass about how emotinoally upset she is right now... And someone like that cant' be good for her...
Tell her mother sex chats and belittling you isn't healthy therapy and you aren't going to sit in that house while she abuses you like that
Post it on fb if you think people are going to read it...
AS long as this guy is pursuing her she isnt' likley to make much progress in returning to you... That's the seriouls danger infidelity poses to a marriage.. its a HUGE distration
I have a vid from dr phil on you tube.. maybe you can show that to her mother I will post it here in a min