Had this been my child I would have hired a VERY good lawyer and sued the airline AND the F/A who did this bigtime. I would also try to get the F/A arrested for kidnapping.
Once again it seems the second you step on an aircraft, all your civil rights seem to be left at the airport. Tell me what right a F/A has to take MY child away from me. Does she know the medical history of my child? I hope the airline pays out big for this and it NEVER happenes again. I probably would have been arrested for assault if ANYONE on an airplane tried to take away my child.