Riders of the Silences by Max Brand — Read

So Mary, running through the wilderness of boulders, was guided straight and found Pierre, and before the morning came, they were journeying east side by side, east and down to the cities and a new life; but Jacqueline, a thousand times quicker of foot and surer of eye and ear, missed her goal, went past it, and still on and on, running finally at a steady trot.

Until at last she knew that she had far overstepped her mark and sank down against one of the rocks to rest and think out what next she must do. There seemed nothing left. Even the sound of a gun fired she might not hear, for that sharp call would not travel far against the wind.