I just wanted to post you a couple of thoughts that might help you get through those tough moments...
Remember; FEAR IS THE MOST WASTEFUL EMOTION If I could guarantee you that W would be back and fully engaged in the R in a couple of weeks, I wager you would be fine right now. Fact is, you DO NOT know what will happen later today, let alone next week, or next month....so why waste energy fearing what you think will happen? You are putting yourself through needless pain over events that have yet to occur.
Yes, they MAY occur, but I guarantee you that you will be stronger and more capable of dealing with them if and when they do than you are right now.
Stop and think....if W had not said she was leaving/done, and she was at the grocery store or getting her hair done right now, then what would be different in your immediate environment, compared to right now? I am referring to your immediate environment....the hunger in your belly, physical ailments/pain, what's happening in your office/room, health and well being of your kids, what's on the TV, what work you have to accomplish, etc. I wager, nothing would be different, RIGHT NOW! So get through right now and stop worrying about later - for YOU DO NOT KNOW what is going to happen.
Getting through this is a battle with your own mind. Stop letting fear control you. Fact is that all the pain and anxiety you are feeling right now, is self-inflicted - it's created in your mind - there is no one putting electrical charges in your head to make you think/feel teh way you are. This is a personal battle of controlling your own mind and not letting yourself obsess over things that have not happened.
You are one of the strongest individuals I have met and I have no doubt you will get through this as a winner!