hi sorry to hear about the bitch ,are there any deer in the area as even a munt jack will take a terrier a long way from where she was last seen ! also your friend says that no earths are present what about drains? i know he said she never goes to ground and is very loyal she just might have this time , failing that how close is the main road ? or public footpaths ,someone may have picked her up thinking she was lost ,i once lost a russell dog for four days i found him dead half a mile away on the A1 ,but he was an earth dog /bushing dog , i found deer tracks and terrier tracks following .i wi