Thanks for choosing health care magic for posting your query.
I have gone through your question in detail and I can understand what you are going through.
Its unlikely due to enberal. If all the possibilities have been ruled out until now then a possibility that it could be a somatoform disorder
is also possible. You should try amitryptiline 25 mg for her, and she may even respond. Pregaba is another drug which can be useful.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
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Wish you good health,
Dr. Srikanth Reddy M.D.