It is suggested that your girlfriend try to keep her abdomen warm, eat some hot food, eat traditional Chinese medicine for tonifying blood and qi, and avoid cold diet and drinks. Pay more attention to keep your feet warm, and the cold from your feet to your abdomen is more likely to cause gynecological diseases and diarrhea. Long-term diarrhea is prone to chronic enteritis and colds.
Cupping is best for physical therapy. Cupping 15 minutes on the small belly before going to bed every day for more than 20 days. Once you feel the itching of cupping, these are all signs of improvement, indicating that the cold inside your stomach has begun to drain out!
I hope the above suggestions can help your girlfriend. I wish you a speedy recovery.