A child trapped inside Lucia Mar who surfaces when the dogs stray, begging Carl not to kill their shared body.
When Carl begins forming a death mark over the conscripted Lucia Mar, her voice turns raspy and her eyes change, and she identifies herself as Diah — "Lucia is with Alexandro, and Alexandro is only here when the dogs are close." Placed under Under Orders to tell the truth, she confirms it: she and the others are in a cold dark place, taking turns at the surface, and sometimes they see light. They can hear whispering "like a river running through our room," and touching it hurts.
Her plea — wait until the dog is close and Lucia will come back — is what stops Carl from executing her, and it confirms Florin Esposito's theory that children are trapped inside Lucia Mar. When Carl orders her to strip the artifacts from the floor, she answers helplessly that she doesn't know what he means and doesn't know how to play, and that alone convinces him she is telling the truth.
Speaks through Lucia Mar's burned, soot-streaked body with a raspy voice and changed, frightened eyes.
Living proof that Lucia Mar's body holds other minds, and the reason Carl spares her.