Hi Melinda-
I’m sorry your pup is having issues. A little more info is needed to make a good recommendation. Do you have any idea what she is sensitive to? A certain ingredient or fat level? Where do you shop for food and what is your budget? Did the vet make any recommendations?
You could print the list of 4 star foods and bring it with you to the store and see if it carries anything on the list. I wouldn’t jump to a 5 star food from what you were feeding. It might be hard on her system. Many posters have good luck with transitioning to Nutrisource and/or foods made by Well Pet, such as Wellness or Eagle Pack.
Good luck!
