Finally my husband decided take over, since he's taller. He carefully laid out and hung over the side. Sure enough, he saw a little brown paw. So them he started wiggling himself forward and ripping at the grass, trying to get to where he could see better (he kept thinking coyote pup). It was a min pin, sitting on a tiny little cave-like overhang, not much bigger than she was. He was able to grab her up by the scruff of her neck, and brought her up, where she immediately cuddled into him. We brought her into the cabin so we could see her.
Skin and bones 😢
The next morning my husband took her to town to see if there were any posters up, and ask around. He also went to several of our neighbors upstream, with the assumption that she'd been washed downriver, because the current is pretty fast, but no luck. So he brought her back to the cabin, where she hung out with our dogs, caught herself some moles, etc. And of course being given food and water.
Then, our neighbor kids came over to play with my kids. They're one house over, downstream of us. They saw the dog and freaked. They said it was their friends dog, named Kiki, and she'd been missing for a week. So i took her over and sure enough, the dad confirmed it. She ran off when they were shooting off fireworks, and they looked for her for 2 days before the friend had to go home. Because we live on a fairly fast river, they assumed she probably drowned.
If we hadn't done something out of the ordinary, we might have never found her, and she would have died there. We had been over there during the day, but as a group, laughing and having a good old time, and never heard her. Her bark was so weak.