The Inner Demon began its fierce attack on Alex's psyche by trying to rile him up using words that could make Alex feel like there was some truth to them.
There wasn't much the Inner Demon could use to attack Alex, he had taken care of most things already on his own. The only thing remaining was Pearl, and the Inner Demon hammered away at that part of his mind.
It constantly told him just how much of a mistake it was to send Pearl to the ritual room when he knew he was going to die.
However, Alex found it easy to not listen to the Inner Demon this time around. Why would he? He had Immortals and Divinities telling him that it would be fine, and he trusted Pearl more than anyone else to succeed through it all.
The blood that was in him now was given to his mother by someone that the gods were afraid of. It would be a miracle for Pearl to fail at this point.