She again called, but he had completely disappeared.
Under such circumstances a less brave woman would have sunk on the spot in utter despair.

She kept on, following as nearly as she could the track that Paul had taken.

She toiled on and on for three quarters of an hour, but never sighted the Indian.

At last she completely lost the trail.

The rocks and uneven ground impeded her progress, and the trees confused her in the line of march.