Eventually, Hermione caved and allowed the group to be separated, though she told Harry in no uncertain terms that she would be angry if he got himself a) cursed, b) injured, c) killed or d) all of the above. She and Barty came to an uneasy truce. Both were determined to help, though for very different reasons. The young witch tried to reason with the Death Eater, make him doubt his Lords or at least his methods. Barty Jr., however, was beyond reason. In the end, it was easier to go along with his fatalistic believes than to work against them.