for many years I have had IBS, and have also since been diganosed with crohn's disease. for many years I was pretty sick. for me, this runs in my family..so what is needed to do, is for one. If she is having any problems would be to talk to a nutritionist and get on a "diet" that works best for her. Which is usually a low ash diet.
Then you get to a point were you know your triggers, like I cannot eat ANY raw veggies etc. I also have the proper meds, if something happens. I have seen the ER room when at disney TOO many times to count.
But once it is understood by the patient the much easier it is to deal with.
good luck!