Karen claims to have seen Charlene and Becky around 1830 hours. At about 1845 Charlene phoned her friends from a phone box ( now removed) in Leopold Grove. Becky went home to either revise for an exam despite being expelled from school or have her evening meal despite having been to McDonald. She had been living with a man in his late 40s since she was 14 with parental consent! This man was also having a relationship with Karen and Charlene at the same time.
Karen claims that the bus arrived at the Winter Gardens bus stop around 1900 hours and Charlene walked up to the stop to meet her friends. They walked towards the seafront. Lancashire police have Charlene walking towards Caunce Street in the opposite direction!
I was a bus driver at the time and buses were diverted via Cookson Street after 1700 hours due to heavy illumination traffic . It's impossible to see Cookson Street bus stop from the Church Street junction with Leopold Grove Karen was. This is one version of Karen's last sight of Charlene.
In another version she claims the man she was having an affair with walked her and Charlene home to 109 Buchanan Street between 2130 & 2145 hours!