She looks like a Pom/Yorkie mix to me. The first picture you posted of her makes me think "Pom" and then the second made me think "Yorkie". Of course, being a mixed breed, she could have LOTS of different breeds in her. You never know, she could be a Pom/Yorkie/Chi/Shnauzer/Border Terrier cross! LOL

Whatever she is, she sure is cute!