He also tried to finds the parent/s on the train itself. But I also see the argument that he should have asked her name and immediately led her to a brightly lit, central safer place away from the tracks.
Mark was a station dispatcher
. Dispatching is not just about sending the train off. It involves seeing the passengers safely on their way.
Dispatchers routinely deal with passengers about to be separated from their belongings. Normally luggage or buggies are left behind, not often children, though I've seen that done. There are policies for dealing with it all, not least to prevent a panicking passenger from trying to prise carriage doors open.
Mark assumed the mother had stepped onto the train a moment before. There was nowhere else she'd have gone.
The child was safe while the train was not moving and the dispatcher and the CCTV could see her. (Though of course, we know that only Mark could see her.)
Mark knew to look for a
distraught woman who'd just realised her child hadn't followed her onto the train. Maybe she had luggage or a smaller child to carry.
It should have taken 30 seconds.
Again, I've seen that done. The parent meets the dispatcher at the carriage door.
All is then well and off the train goes.
(Very occasionally a child is actually left behind. This can happen where the train and platform are crowded.
The term 'distraught mother' doesn't touch it: I once saw a woman who'd managed to misplace a young child at London Euston being escorted screaming from her train at the next stop, Milton Keynes, half an hour away.
The child had been found right away by Euston staff and was safe. The mother was indeed so
distraught that she had to be dissuaded from jumping onto the track and running back to London.
A cup of tea, a biscuit, a kind word and a free ticket to Euston. All in a day's work.
)