Her autonomic nervous system (ANS) is responsible for the digestion of her food.
The ANS or the vegetative nervous system, is the part of the peripheral nervous system controls and regulates bodily functions including the digestion by inervation of smooth muscle and glands.
The enteric nervous system is the nervous system of the gastrointestinal system and it includes sensing changes in the gut, regulation of secretions in the gut (hormones, enzymes) and control of peristalsis.