Hi and WELCOME! How old is this pup and how long has this been going on? Are all the stools this way? What is she eating exactly? Has the stool been tested 2-3 times for Giardia? What else has the stool been tested for? Has a thorough blood panel been performed? There are so many things that need to be ruled out before you just then focus on a hypoallergenic or raw diet - both of which can be life changing for dogs. But first, all of the health related possibilities need to be looked at.