Thanks for writing your query.
After reading your post, I would like to advise that you should get her clinically examined and investigated.
Following investigations may be helpful :-
1. Stool examination.
You can give her an antacid like Omeprazole
40mg once a day before meals along with Domperidone
Antibiotic like Ciprofloxacin
500mg twice daily along with Metronidazole
400 mg thrice daily will help in controlling infection.
A probiotic along with digestive enzyme
preparation containing pepsin and fungal diastase after meals will have added beneficial effect.
Reports of the above mentioned Investigations will help in planning further medical management.
I hope this is helpful to you.