If you know you're travel sick then you take some tablets or whatever before the flight. If you know that you have a child will alleged problems, other than bratty-itis, then you surely take measures to control the problem, she clearly expected problems as she was asking for the wi-fi to be switched on before take off.
Mumsnet hadn't picked up on this when I looked earlier, no double the woman was practising 'gentle parenting', their euphenism for ignoring the behaviour, note that 'gentle' is almost 'neglect'.