Thanks for posting your query.
With the available described symptoms, there appears to be possibilities of intestinal obstruction
as she has past history of surgery.
Past surgery predisposes for intestinal adhesion
with high chances of intestinal obstruction.
You should consult with internal medicine specialist/ general surgeon
and should go for thorough check up.
She should also go for x ray
abdomen to see fluid levels in x ray which is highly suggestive of intestinal obstruction.
If obstruction is present then surgery is mandatory and if obstruction is absent then she should take plenty of water, high fibrous diet.
She should perform increased physical activity which maintains intestinal motility.
She should also take those laxatives which increases gut motility.
Dr. Mayank Bhargava