Thanks for writing in.
Though it would be tough to imagine GERD in a child, it can occur in children. Certain medical conditions like hiatus hernia
can also cause symptoms even in a 10 year old. This presents as nausea
early in the day, discomfort. This needs to be evaluated clinically and is only a possibility. If her medical tests are normal, a psychiatry consultation might help. Sometimes children may not be able to say everything and may be under stress
which can be handled by trained professionals.
Hope this helps