Missing in this discussion is the fact that the woman entered the country using global entry. This is a trusted traveler system where you normally skip all checks other than a very infrequent random checks. It works on the honor system and in order to be enrolled the woman had to watch a video and acknowledge she was aware of what is and is not allowed. since It functions on the honor system violations are treated more severely than had she entered customs the normal way. In addition she would have been asked and had to check she did not have any banned items at the kiosk.