Thank you for your query.
Seeing the problems your daughter has undergone it is advisable to get a stool examination done initially before deciding to avoid certain products. Amoxicillin
can also cause diarrhoea
and it would be better to add probiotics to change the intestinal milleu.
While being tube fed your child must have been having cereals and if that was being tolerated well then it is very unlikely that you daughter will be allergic to gluten
I hope I have responded to your query to your satisfaction.
Wishing your daughter all the best.