Say “No” in a low, quiet voice and immediately make a sound to startle her. In the microsecond that she looks up, say “Good girl” to praise her for stopping what she was doing, smooch or click your tongue to keep her attention on you, and then redirect her attention to something more appropriate. The key is to be prepared to take advantage of that half a second (or less) of attention that you’re going to get when she looks up.
