Def get a stool sample done as she prob has a yeast prob, then work on getting rid of it for a whole month and then good probiotics for one month after. During that time restrict sugar foods and sweet drinks if poss.
I would tend to back down on the gsh if she has yeast. I also would ask for a lung culture to make sure she is not growing aspergillus, or candida or other fungal in her lungs. This is so so important to keep in check. Gsh can feed fungal in the lungs as well as in the bowel, these need to be checked asap!! Gsh is great but i dont beleive it is the answer to this whole complex condition.