My dtr is 10. She is having another bout of diarrhea, nausea, cramping and some vomitting. Sometimes she is sick for 2 days. She had a number of attacks last spring and now this is her second bout within a week. She doesn't have constipation and she kept a food diary for a while. Sometimes overeating or fried foods but not always. What can she use for relief?

Has your daughter been seen by a pediatric GI doctor? If not, I would suggest you make an appt. - sounds like she may have IBS. But it does need to be evaluated.
Let me know if you have more questions.