This was on that site Taje found, it's very interesting information although I'm not sure I agree with everything he says even though I'm not an expert, there was some good comparison photos too but you'll have to check the site to see those.
I think your girl is beautiful. Poo on those that try and say she's not a yorkie because she doesn't fit the yorkie stereo type or the akc standard. This site is filled with gorgeous larger size yorkies and your girl is one of them. I used to have a Silky Terrier as a young girl and I can tell you one thing for 100% sure their demeanor is totally different. They are not readily lap dogs and even though they may look similar in comparison, a silky has a stronger body frame. I could not mistake my silky for a yorkie the personalities are very different, not to say one is better than the other..just different.
http://www.amronsilkyterriers.com/am...ron-links.html
Differences Between
Silky Terrier ~ Yorkshire Terriers ~ Australian Terrier
One of the questions ask most often is, " What is the difference between a Yorkie and Silky?" I will attempt to explain this along with photos for you to observe the differences.
A Silky is a 10 lb dog of substantial body for strength but with fine bone for agility. They have a 'wedge' shape to the head (longer muzzle and flatter skull) with ears that stand erect on top of the head. They are a bit longer in body than tall at the shoulders. They are well muscled and extremely alert. Ready to please but with a stubborn streak if forced rather than 'ask' to perform a task. The Silky coat is just that "Silky". It can be any shade of blue from a light steel blue, to pidgeon blue to a darker slate blue and many varing shades in between. The tans should be rich and vibrant. NO BOWS PLEASE A Silky is truly a BIG DOG in a small dog suit!! They love to run and play outdoors, chase the squirrels and keep all those big dogs at bay! You can carry one around but they would much prefer to walk, thank you!
A Yorkie is a dog of approximate weight of 4 -5 lbs, (not over 7 lbs.). The head is shorter in muzzle and is more dome shaped. The ears are erect but may tend to flare to the side a bit. They usually have a larger base than a Silky ear. The Yorkie is a square dog meaning that it is no longer than it is tall at shoulder giving a 'box' appearance. A Yorkie is only suppose to be a 'slate' color of blue and the coat is usually heavier and floor length (when kept in show condition). A Yorkie is more of a toy dog than a Silky in that they readily become a lap dog. And love to be pampered and waited on.
The Australian Terrier is a bit harsher than the Silky but basically the same head shape and body style but a bit larger package. The weight generally runs in the 16 - 20 lb range. They have a different coat texture in that they are what is called a "broken coat" terrier and they carry an undercoat and a guard coat. They are the blue and tan coloration (as well as solid reds). The topknot is a bit softer than the rest of the body coat and should be profuse.
When they bother you again tell em "Oh really? So what makes you and expert?"