To distract herself from her momentary loss of connection with her legs, she tried to focus on all that good milk sloshing around beside her. The connection with her legs she supposed was unimportant at this moment, and she was not wholly troubled by it.
In fact, it excited her. All these things moving, traveling, making the break. She thought about their stops and starts, lapping her maybe even.
It was the break she remembered and punctuated – not as a beginning (for we all know those to be entirely unreliable) – but as a marker which she could come back to, should she ever again become uncertain about the movement of her legs, or the direction of ahead, or the travels of the milk trucks.