Hello! Thanks for putting your query in HCM. I am a Gastroenterologist (DM).
As there is recurrent and persistent vomiting
She should be evaluated. First get a xray abdomen in standing position to see for any partial intestinal obstruction
. If it is not there then endoscopic examination is advised.
Vomitus which smell like stool may happen in intestinal or gastric outlet obstruction
or may be gastrocolic or enterocolic fistula.
I hope I have answered your query and this will help you. Remain in touch and get-well soon.