So I've just read all your posts 'Guy'. You are so lucky to have a W who is willing to stay AND go to MC. I was so past that point when I left. When I was willing (first & 2nd 'bomb') we thought we'd figured it all out on our own and didn't go.
Focus on the positives of your sitch, stop everything else! You need to focus on today! Learn from the past, find happiness today and patience for tomorrow.
And the intimacy can come back - I am living it. Took me reading 50 Shades to FIND my s_x drive again, but it's back and then some!
Different to be giving advice from my POV, but be the change you want to see in your R. It took me giving my H "closure" to really find him attractive again. When he stopped wanting/needing me, I started wanting him again. Weird but true. And it was before I found out about OW - but she was "there". Like others have said, my sitch is so different than most, but my reaction is pretty typical from what I've read about WAW.
I've been learning so much these past few weeks and am no expert. 7 weeks today since I *hinted* at regret of not trying harder. 3 weeks since I said out loud that I wanted us to work on our R and M.
If your W wants a week away, wish her well. Otherwise you may face a month or 6 or more of her gone.
That's my thoughts for now. Will check back in with you soon