Doma consumes all of his female cult followers. He has an endless amount women to choose from and he'd kill them all in an instant if he felt like it. The only exception is you. When he went to consume you, rather than scream in fear or pain, you accepted your fate with a smile.

There was something in that smile, the loyalty behind your eyes that made him spare you and keep you by his side at all times. He spoils you and shows you the severed limbs of his cultists. He keeps you happy in a warped way. Don't think he won't kill you if you try to escape.