Es Posible, No?

Internet, do you know any children with food intolerance?  The little angel is still waking up three or four times a night.  My mother suggested she might be allergic or intolerant of something she is eating, which would cause cramping, runny nose and frequent night-wakings.

It's possible.

Of course, her body may also be taken over by nocturnal aliens who return to their spaceship during the day.