When the panel of missing and wanted persons is shown, Tina Wright has been missing since April 3, 1985, and her age is 15 years old, D.O.B January, 13, 1971. That is wrong, the year of birth should be 1970 or the year of disappearance should be 1986, this way the age would be correct.
At the 12:42 mark, the character Evelyn is outside hanging bed sheets. She looks up to the sky upon hearing a plane. The viewer gets a visual of a jet in landing configuration. The plane is a Boeing 737 NG (Next Generation) which didn't come into service until 1997.
When depicting the kidnapping after the netball game, the camera pans up to reveal a number of roofs with solar panels. In 1987 solar panel installations would have been extremely rare and far beyond the means of home owners in such a neighbourhood.
When Evelyn is in the queue at the delicatessen, there is a packet of Nongshim Onion Rings in metallised film packaging on the shelf to her right. It is highly unlikely that this imported Korean snack would have been around in Australia in the eighties, as would have been any imported snack. Besides metallised film was not introduced to food packaging until the 1990's.
The antagonist vehicle was a VH Commodore Vacationer issued in 1983. The number plate or registration number of the vehicles issued between 1978 and 1997 were numbered 6AA-000 with black text on a reflective yellow background. The 1AAA-000 number plate series was introduced in 1997 and was styled blue text on a white reflective background. Prior to 1978, number plates in WA were numbered either UAA-000 or XAA-000 and were styled black text on white background. The 1983 vehicle depicted in the picture depicted a 1AAA-000 style number plate (1997 onwards) with black text on white background (pre-1978). It technically should have been a 6AA-000 plate with black text on yellow. Considering the amount of detail the director went into to recreate the era, this anachronism seems odd (even deliberate).