Missing

I had a doctor's appointment on Friday in College Station. When we got home, 8 hours later, our puppy who was chained up in the backyard was gone. The cable she was chained on was pried open, and it's supposed to hold up to a 100 lb dog. We've looked everywhere, called everyone, and put up posters with her picture so we are still hopeful, but trying to be realistic. She is pulling a 15ft cable with her, and her collar has 2 tags on it with 2 of our numbers. It is odd though because she never leaves our place, and never goes after any animals or passer byers. We are hoping she has nine lives, since she already used 3! Being a pound puppy, having parvo, and getting bit by a snake.