It was the correct one.

The Three Months In Detail — What Can Be Reconstructed

The accounts of Marie’s winter survival journey provide a general outline and some specific details that allow a partial reconstruction of what the three months actually involved.

She left the Boise River area with her sons and one horse, carrying some provisions including knives and hides.

The initial direction of travel was west, which would take her out of the Bannock-controlled territory and toward the Snake River plain.

At some point she crossed the Snake River.