I am pretty sure that when I posted my original post I just asked for symptoms to look for. I figured this was a place where people know more than I do and know what signs yorkies show when they are hurt or sick.
Thank you to all of your wonderful nice people

I appreciate your support. We have never owned a dog before so this is all very new to us. We do have a family member who is a vet tech who answers all of our questions. We aren't dumb, and its not like she couldn't walk in a straight line. we were just concerned.
Thanks again for your help
p.s. i left my computer open and online. I didn't realize that people could see I was online so I left it open so I could check responses every once in a while. I am not relying on this blog for all of my questions- I just wanted to hear from someone who was experienced to see what they thought.