Continuity mistake: Trying to protect Salvo, Riley punches two thugs. The second one is a red bearded man. The big boss urges then the other baddies to attack, and redbeard is way behind him, hasn't leaped into action yet. (00:11:35)
Continuity mistake: The chain gang trio is having a bit of chit-chat underground. The social worker Batman came looking for hauls a giant rock on top of the cart, but the rock is gone when the gallery starts to collapse. (00:08:25)
Continuity mistake: The fat boss tells his underling that the prisoners will bring him "twice the gold ore." He asks then "Do you hear me?" The fan is in front of him or behind the back. (00:06:15)
Answer: She escaped off-screen and created a copy of herself to fool everyone.