Maybe it's the way you're rolling up your sleeve. Maybe it's the hairbrush in your right hand slowly tapping the palm of your left hand.
She doesn't actually have to ask the question. She already knows the answer as she watches you walk toward her. Still, you can see the question in her eyes. You can see it in the way her hands move to cover and protect her bottom, almost as if they have a will of their own. It's in her posture, her body language. She knows, and she really doesn't need to ask:
"Am I in trouble?"