Originally Posted by
tickle
Unless you know what happened specifically and could give the vet accurate information, they can't diagnose what they dont know and from your description did a pretty good job of explaining it to you. Your dog was in shock, could have been hit by a car and stunned for a while, then got up. The only suggestion they can give, really, is keep her overnight and do a more thorough examination, unless you are willing to do that, I dont know what else to suggest.
She was wounded, as you describe. How, is anyone's guess, that would explain the pale gums and shock.