I think she just has that puppy hair that will be replaced by beautiful Yorkie hair and I wouldn't worry ! My Cherish has really fine hair that looks good for maybe 10 minutes if I'm lucky...then it's back to ratty looking and I don't worry a bit ! She'll have whatever she'll have ! After my Chanel and her tons of hair - one with thinner hair is a piece of cake !
I have their photos here and Cherish is mixed in with Chanel...
http://www.*********.com/mbbs2/photo....asp?albumid=7
ps...I'm glad your feeling better and hope your doctors make up their minds !