During the discussion between Cara and Dahlia (when Cara is hanging in the air in chains), Cara's height over the ground keeps changing - sometimes her face is level with Dahlia's, other times she is higher up than Dahlia.
Just after Dahlia suggests that the training of Cara should continue someplace else, Cara, hanging from chains by her wrists, is shown with the more extreme bruise on her right eye. It's her left eye that was particularly blackened. That image was obviously flipped around to be a mirror image of itself.