This shouting is still getting underway, she is still turning her head to look at the jeeks, when the doggie door emits another burst of light. Her eyes flick that-a-way; she thinks that she saw something, a long round shadow cross-sectioned in the light for a blurry instant as the door was being slammed inward. But when her eyes focus on it, she sees nothing except the oscillating door, same as before. These are the only impressions left on her mind, except for one more detail: a train of sparks that danced across the lawngrid from the doggie door to the jeeks and back again during this one-second event, like a skyrocket glancing across the lot.