I read some of your additions.

Some people suggest gut shots to a 12 hour wait. Much of my gutshot deer tracking knowledge comes from a personal experience. I shot a doe couple years ago, 8 am. I went back out at 4, following a horribly sparse blood trail. Finally found a bed, and blood that picked up fresh, I stayed on it but moved quietly as I could. I literally crawled into postion and shot the deer again at 5 pm. 9 hours after initally hitting it, but very much alive.

Yes you ended up pushing it, but you still did good by waiting a long time. It just turns out it happened to not be long enough, but it very well could have been. I think now your only hope is that dog. But it found it once, I bet it can find it again.