Agree that the owners should have had the pet sitter interact with the dogs, take them for a walk, etc every day for a week or more to be safe-the poor woman was a total stranger to the dogs who were already psycho timebombs from being penned up all the time-stupid owners...
We do not know they are crated all the time. Likely just for when someone like this sitter was to come over soon.
Some dogs are just bad.