Congratulations on your new yorkie! Even though her ears aren't standing and her hair is not quite as long as the others were, I'm still sure she's a Yorkie! I got mine at 8 weeks, and his are up and down and sometimes back and forth. His hair isn't long yet, but I can tell it's only a matter of time, as I'm sure it will be with your girl. My breeder sent mine home on Puppy Chow, the vet, though, has me transitioning him to a better formula (Science Diet for mine, but every vet is different, and usually know what they are talking about). Just keep the vet's office on speed dial and YT bookmarked, and I know you'll be a great mama!