The nervous horse bolted almost before she got into the saddle.

A strange, trenchant trembling coursed through all her veins.
She wanted to scream for Bo to wait.

Bo was out of sight, but the deep, muddy tracks in wet places and the path through the long grass afforded Helen an easy trail to follow.

In fact, her horse needed no guiding.

He ran in and out of the straggling spruces along the edge of the park, and suddenly wheeled around a corner of trees to come upon the gray mustang standing still.