Other mistake: Kelly is on her car and she is having a phone call with Bosley and the other Angels. However, neither of her hands is holding a phone. In addition, the person on the car is obviously a double/stuntwoman; her hair is different.
During the scene in the Sheriff's car, after the Angels choke the Sheriff and Deputy, they lose control of the car. It goes off the road and a ramp is seen, hidden by some trees, that the car goes off to end up in the swamp.