Have any of the doctors taken biopsies of her stomach and looked for eosinophils? I'm asking because it is possible that she may have Eosinophilic Gastroenteritis as a cause of the reflux, the gastroparesis, and the CVS. There are treatments available. Check out http://www.apfed.org/ for more info.
BTW, my Husband has Eosinophilic Gastroenteritis and he never had Asthma until his Eos. Gastroenteritis symptoms started... And research has shown there to be a correlation between allergic inflammation in the airway (Asthma) and Eosinophilic Gastrointestinal Disorders.
Chronic Lyme Disease, Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication/Chemical Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD ("Secondary Lupus-Like Syndrome"), Osteoporosis, Pancytopenia, chronic malabsorption/malnutrition, etc.; G-Tube; Currently TPN-dependent.
Meds: Zofran, Pulmicort, Heparin (to flush PICC line), Claritin, Colloidal Silver (used topically), IV Milk Thistle, probiotics.