It is very difficult for me to be sure about the cause of your daughter's symptoms. She does seem to improve off milk and dairy which probably indicates that she is lactose intolerant. You must keep her off ALL DAIRY products not just milk itself. This means no yoghurt or anything made of dairy products. See if she improves on a very strict non-dairy diet. If she does not she will need to be seen by a paediatrician.
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