Your fingers start wiggling across the seldom-touched fur. In her hysteria she manages to trap the arm between her hind legs and pull it from the battle. You put your mouth back on her belly to compensate. She explodes with laughter again and tries to roll out from under the torrent of tickles. This time she succeeds. She struggles shakily to her hooves and backs away over the tangled sheets. You lunge after her form and snag a foreleg—halting her retreat.