Then reward it. The timing of a pressure can be important to learning. Now change the punctuation. Without her, man is lost. The words are the same but the way they are timed creates an entirely different meaning.
Aids are the same way to the horse.
It's the timing, the punctuation, of our aid pressures that often counts, not the strength or force of them. Aid pressures must be balanced in order to create a training corridor for the horse to move in. A horse has a one track mind. Anything will distract him and when it does, he's gone. He's out to lunch.