Okay, all caught up now. You and I (and about a thousand others on this site) are in a very similar situation right now. I'd like to make a few suggestions on how I'm helping myself...
First, being on these boards is fantastic. Gives a great place to vent/journal/ask for advice. Also, it's great to catch up on the Vet's sitchs to see just how similar these things seem to be.
You really need to try to detach a little more each day... This means NOT checking her Facebook (hide her from your timeline if you have to) for pictures, NOT constantly looking out of the corner of your eye to see if she's "noticing" your changes, and most importantly (for me especially) not getting to high-with-the-highs and too low-with-the-lows.
Many things are going to happen over the coming days/weeks/months... some of them will be great, some of them will be terrible, but they'll all seem WAY bigger than they are at first... time will put them back into a perspective... It's part of that whole "patience" thing everyone is talking about...
And soon, you'll notice that like me, it's easier to tell other people these things than to do them yourself, but before you know it... you'll wake up one morning and something will just feel different... Happened to me VERY recently, and while it didn't make everything better, it did allow me to actually see a little more light in my life than i'd seen in a while...
You're doing a good job, but pull back a little more to protect YOURSELF.