Think about the story. Why does the main character hide from the foragers in the cave?

The narrator knows they will smother the fire and take away its needed warmth.
The narrator fears they will steal the backpack containing the broken soul orb pieces.
The narrator fears they will react badly to the sight of someone with a broken soul orb.
The narrator knows they will return to the settlement and tell the elders about the backpack.

The main character hides from the foragers in the cave because they fear that the foragers will take away the warmth of the fire, steal the backpack containing the broken soul orb pieces, react badly to someone with a broken soul orb, and potentially inform the elders about the backpack. This fear drives them to hide and protect their belongings and themselves.