I missed the start of the programme, so I don't know how or why the two adults contacted the programme. I did really feel for Jacky, as she was obviously knocked for six by the news that she wasn't who she thought she was.
I could have been one of those babies, had I not been born via forceps.
In those days, the babies were taken away at night and brought back to the mothers for feeds.
When the nurse brought my mother her baby to feed, she said "this isn't my baby". The nurse poo-poohed her, but she was adamant, as "my baby's prettier than this" (apologies to the other baby, who I am quite sure was just as pretty), and pointed out that the baby brought to her didn't have the forceps marks on the head.
They quickly realised that yes, she had been given the wrong baby, and I was brought to her. I wonder what would have happened, had I not had forceps marks to make me stand out, and the error wasn't rectified at the next feed.