Hang in there man, at this point all you can do is worry about you. I jus tcaught up on your sitch ... The one thing I will say is maybe when you tell the children it will become more real for you both, maybe then you can detach a bit better, and maybe then she will realize the gravity of it all. I think when I look back .. the mediation session my WAW and I went to did this. Seems thats when things started to turn a bit for the better, I can only mind read ... and we all know the trouble I will catch for that ... but I do log on the calendar and it seems to have had an impact.
Touching on the humor thing .... man .... I am right there. I realized I used it to hide ... from myself and my problems. To a point I would belittle others with it, not so much my W .. although I am sure I did ... but even strangers ... I thought I was being funny, in fact I was just an a$$hole ripping people who did not deserve it. I am not saying you are doing that ... but that was one of my deep character flaws that I had pointed out to me by an angry WAW ... so I looked at it closely and realized regardless .. I wanted to change that, humor is good, but only in certain situations, when its used incorrectly it has devastating effects that I am now realizing in many of the relationships I have.