When getting hair for the DNA test, Rachelle takes hair from a razor. You cannot use hair for a DNA test unless it still has the skin attached to the bottom, which hair from a razor would not have.
During a scene riding in a Crown Victoria in the woods, the car has Maryland or BC plates (look similar), it goes around a curve, same car California plates.
In the opening scene, the "father" is reading a newspaper from Tukwilla, Washington. The license plates seen on all the cars are not from the state of Washington.