They only just barely escaped from what was a Resistance ambush. Adrenaline was running high. The information they were sent to find wasn't discovered. Once they were able to return to their homes, they could begin writing their mission reports. The Dark Lord would want to know first thing in the morning whether or not they were successful. Neither one them was looking forward to the moment when one of them had to confess that their cover was blown and the Resistance would no longer be in the same area again. At least one of them was looking at the Cruciatus Curse for their failure.