I'm a retired air traffic controller...
... and I feel duty bound to say that as a controller, I would not have been able to pull off what the controller in this movie did. I may be the exception to the rule but I might have been able to let the little girl know where the restrooms were located in coach,(but not first class). As for the rest of it all, I know the cockpit is in the pointy end of the plane and I might have come up with the baseball bat idea independently but she would have been on her own for the rest of it.
Sure glad that in my 24 year career, I managed to dodge this kind of bullet.