Did she get diarrhea too?
The type of diarrhea you get affects how much nutrition you get from the meal. Some people with acute/severe diarrhea may get little nutrition from the food, even losing nutrients and proteins. There are lots of causes of diarrhea. Once in a while might be caused by anything from stress, to allergy, to short illness, to simple unfamiliarity with the food and spices. Severe to acute diarrhea/gastroenteritis can be dangerous though and you should seek medical attention, especially if you have other health concerns. Chronic diarrhea needs medical attention as well.
Genhoth: what happened? I hope it's mild. I got salmonella poisoning about 2 years ago (contaminated salad from a deli). I was in a fetal position for 2 days =/ Had to stay in hospital on IV. Sever pain for 4-5 days, very uncomfortable for 7-8 days. I wanted to fire bomb that deli...