I have a 6 month old female Yorkie acts kind of disoriented after a bath like she doesn't know where she is can't get comfortable wandering from one end of couch to other and when you give her a treat you have to lay it down for her to pick up the other puppies will take it from your hand... I've took her to the vet and he says nothing is wrong but she isn't like the others something is wrong! Any answers?

Go to another vet for a second opinion.

If you feel that this puppy is not acting normal, investigate. And if that means you need to see different vets, than so be it.