The Woman mentioned the Demon.
The Demon had fallen on the jar in which the Cannibals and Vampires were creating the mist.
The Demon was injured and its blood got mixed with the mist they were creating.
And as per the Woman, the Demon's blood was the missing deathly piece they were looking for. The piece came to them without even doing anything.
Boulder heard the Woman and he was tense at the mention of the Demon. He still remembers the terror it caused in the city.
"That Demon was an abomination." He said.
Cupid was also in the cell and she had a frown on her face.
'She is saying that a Demon came to them, but you said you saw no Demon in her memories. Is she lying?'
'No. She is not lying. I really saw someone falling on the jar of the mist. It was a skinny and injured person. I thought the Demon must be bulkier so I didn't believe it.