Welcome to HCM,
Pain in the stomach is due to ulcer as gastroscopy has confirmed it,but it is not clear is it duodenal ulcer
or Gastric ulcer it should be gastric ulcer.
If you feel uncomfortable after any particular food items you may avoid it,diet has little role in treatment of ulcer yes if you smoke or take alcohol you must avoid totally.
There are very good drugs which will heal ulcers in 4 to 6 weeks.
You can get H.Pylori and if positive may be given triple therapy along with PPI and antacids will prevent recurrence of ulcers .
Please do not take analgesic
and anti inflammatory drugs.
Please take care of her
Wish her speedy recovery.