Hi,
Noted the history about your daughter having depression and had taken Remeron for sometime.
Selective foods and beverages are not troublesome as you have mentioned about grapes, soda, potato chip, flat bread, cheese spread, yogurt and so on.
While the other foods and beverages are causing vomiting means that there is a possibility of intolerance or sort of an allergy to other foods.
Treatment can be done symptomatically with a PPI like
Omeprazole and
Domperidone and see the results.
If this fails to help her, go for an Upper GI Endoscopy and Barium studies for upper GI System as well as other tests of stool, blood and urine,
Ultrasonography of abdomen to start with and CT scan of abdomen if needed.
These will give the probable cause to be treated accordingly.
IF all the investigations are normal then the obvious cause may be the depression or so that needs to be evaluated by a
Psychiatrist and treated well.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. T Chandrakant,
General Surgeon.