Yeah, it doesn't show how the woman became upset or her baby got bumped or whatever it was.
I am suspicious of the story because the reporting mischaracterized the part we did see--so I wouldn't trust them one what we can't (they said the employee threatened to start a fight, but in fact the employee was responding to a threat from a passenger who had threatened to "deck" him).
That young mothers crying was getting to be annoying. I can understand her crying but that was way too long.