Quite a few of the strikes in torture, attack and fight sequences obviously didn't actually make contact with the victim. One of the worst is when an inmate causes "blood" to gush from a guard's head when the shovel blade she swung at him missed by at least 6 inches.
During the escape in the beginning of the movie, 2 dogs are let loose together to hunt the escaped prisoners, yet only 1 dog arrives and is struck down. The second dog who was clearly with the first one is nowhere to be seen.
At about the 16-minute mark one of the girls is attacked by several men. One of the men rips off her dress entirely but in the next scene her dress is back on and just her shoulder is exposed.
During the initial escape, the two women's legs are clad in dark blue fabric of some kind. When they stop, however, they have bare legs.