My Yorkie, Brooke was diagnosed with GME a neurologic brain disease. It is usually diagnosed with an MRI and spinal tap. The chi puppy looks like she could have it. After your friend sees the neurologist, if it is diagnosed as GME, Granulomatous Meningioencephalitis, then there is a yahoo group that is for GME dogs, for info and support, here is the link:
NewGMEDogs : NewGMEDogs