I don't see just saying open your mouth as anything to be worried about. I could see a family take notice if you'd said something threatening as in open your mouth if you don't you're not going to get fed or any or if or any I'm going to force it in or you'll get a feeding tube. The DON should have given you a chance for your side of the story. I'd write the whole thing down now while it's still fresh in your mind anything you might have said and also what the DON said to you when she brought it up.