[dogbert]

She sounds like she has fear and some will cower and some will lash out. She is out of the mill now and wants to make sure she is never treated like that again but doesn't know anything else. She may be trying to take the upper hand to insure that. You have to let her know you are the alpha not her. Don't take any chances of her biting anyone shots or not. People don't realize how ugly a situation that can turn into. I would get her some training, and as far as grooming goes I'd take her somewhere else. I had to quit using the groomer I'd been to for 12 years when we got our rescue. I take her to a woman who only does one dog at a time and let's me stay. I filled her in on everything during our first phone call and she agreed to give it a try. She has been there three times now and gets better every time. My rescue was very quiet and scared at first, more timid now. She's coming along but it's all BABY STEPS. Good luck.