I'm glad to hear your talking with a coach. They really do know what their talking about. Plus its a good outlet and makes you feel a bit more confident. Take notes but hide them. You bring up some really good points.
My w's family didn't really see things like this. She was very good a putting on a mask. Now, I don't know, my guess is that they do a bit. (kinda hard not to) you can only live this way for so long before you take a dive. I have no idea what she says about me to them. She lies a lot to me though.
All in all you know your sitch best. You know your wife best, however expect the unexpected has rang very true in my case. I hear you on the consequences though, its a very tough call.