first of all, WELCOME TO YT!!
Second, please do not listen to anyone about what your baby is or isn't. Not all yorkies look alike whether in size, coat color, coat texture, ear placement, muzzle size, etc. All it means is that she has a different look. Some people will try to tell you what your dog is or isn't and there's no convincing them. Bottom line is she's your PERFECT baby. She makes you happy, and fills your days with joy.
My baby looks a lot like your baby. He's 5 years old, has the dark coloring, floppy ears, thick coat that grows crazy fast, and... People swear he's not a Yorkie. It doesn't matter that I have his AKC papers at home. I've learned to ignore it, because it doesn't matter what a random person we meet on our walk thinks. My off standard Yorkie boy is my world and he makes me happy.