I know there are a few of those posts but I just do not get it

... I got a one year old yorkie over Craigslist, microchipped, with AKC papers, the Pedigree certificate but she looks like mix of both. She weights 11 pounds, seems she is done with growing. She is very calm, the sweetest doggy ever, I still do not understand why the previous owners sold her but it is not important. I would like to know your opinion if you have well trained eyes and can tell if she is yorkie or silky. Thank you very much! You can find her under my profile in an album.