I'm so sorry that this week has been hard- I think it's worse in many ways when you see progress in the situation, or baby steps, because it becomes that much harder to keep expectations low.
I like the idea of detaching and letting H be for a while at least. I know I've said this before but do you think it's worth setting some boundaries around contact etc? It's a rollercoaster and you need to protect yourself. I genuinely think your H has to feel the loss of you in some way as you've both been in contact so much and I'm sure you're fulfilling many of the needs that the Horse can't. Rightly so, after all you ARE the wife.
What are you doing for you this week? You know where I am if you want to drop me a line by the way.....