A woman who believes missing mother Carmen Thomas cried out for help at a carpark days before she went missing is plagued by guilt that she didn't speak to her.

'We had a bit of an upside-down relationship,' said Teresa Scott, mother of missing Carmen Thomas. 'But I was always there.'

Carmen Thomas' mother broke down at a police press conference today after being asked if she was prepared for police to find her daughter dead.

The mother of missing Auckland woman Carmen Thomas last night spoke of her grief, as police revealed new details of items missing from her car.

Several items belonging to missing Auckland mother Carmen Thomas and her car are unaccounted for, say police.

Carmen Thomas' mother has now met with her daughter's son for the first time since he was a baby.

Police will watch CCTV footage from up to 100 bars as the search for missing woman Carmen Thomas intensifies.

Auckland escort Carmen Thomas has been missing for over a fortnight.

The owner of the club where a missing escort worked said she had been sent threatening texts from a manager at her former agency.

Police say they are "preparing for the worst" after the discovery of a missing woman's car and say her work as an escort may have heightened her chances of coming to harm.

Police investigating the disappearance of Christchurch woman Emma Campbell warn she may never be found.