LEVEL II answer: silas
LEVEL III:
The Code of the Cave
From deep inside a cave, you hear a stir.
The woman stomps thrice. Then she stomps twice again. She stomps, then drags her nails against the walls, then stomps. You hear one more stomp. Finally, one more drag of the nails, and a final stomp.
And then silence.
HINT: morse ♡