(at 6 minutes, 18 seconds) one of the prostitutes is wearing a red short skirt, a floral white top, and a red piece of jewellery on her right wrist. A few seconds later, when the car woman proceeds to shoot, the said prostitute is wearing a plain white top and a gold necklace which she wasn't wearing before.
When the antique dealer is shot three times in the back, it can clearly be seen that there are no bullet wounds.
(at 7 minutes, 15 seconds) The car woman shoots a prostitute, but there is no visible bullet wound, despite the woman reacting to and being killed by the shot.
The Car Woman racks the slide of her semi automatic pistol every time before firing it. Not only is that not necessary (except prior to her first shot), it would eject the next round, as there would already be a round in the chamber after firing her previous shot.