It really is buyer beware when buying a puppy over the internet. Have you read these links?
http://www.yorkietalk.com/forums/yor...ead-first.html http://www.yorkietalk.com/forums/yor...ead-first.html
I would really suggest you post the link to her website so we can research her for you. There are lots of resources to check, USDA (puppymill) list, AKC suspension list, Rip Off Report, Better Business Bureau, etc. plus since YT is so large, some of our members may know this breeder.
This puppy will be a member of your family for hopefully the next 15 years. The breeder you get it from is a very important decision.