Please don't be discouraged. Prince went missing for 6 days and came back. I had given up hope. Don't give up hope, at least not this soon. My prayers are with you, your family and Capone.
I hate to say this, but I would not hold my breath. Two of my rabbits disappeared when they decided that staying where they should have was not good for them, and because there are so many more predators in America, that just makes matters worse.