I'm afraid this kind of situation is virtually impossible to recover from; unfortunately. You simply can not put 'back' what was never 'there'.
These are great attempts though to at least try to make the photo acceptable again. Nice work all.
I had a go also. After trying various methods, this was my result. Sorry i couldn't recover/replace much of any detail that the others could get back.
It's truely unfortunate when bad things happen to good photos.