"Not long enough to grasp dynamics, then," She was just a demon to him, he knew nothing of her Kind. It might make it harder for him to help her, but she had to at least consider it.
"I am a succubus, Alex. The Angel is my pet. Has been for a few centuries, now. Slowly, the sin has been wearing on his soul, tainting him, and it's starting to make him less useful to me, less resiliant overall. He's taken to fathering that infant, as a Miracle to sustain himself, but I've no idea how long it should last, and I have no desire to let him... I want you to absolve him. Give him his strength back."