Lash out at you.

"Y-you monster! You're no better than the beings you released! Look what you've done to me." She points at her body, the dark tendrils are creeping along her arms and legs and her skin has taken on a purplish hue. Her once pure blonde hair is now stained with black edges, and her tits are growing by the second. She glares at you but you feel no fear, all her godly powers are all but gone, the only thing that remains is her status and prestige. And those can be taken away quite easily. You move in an intense show of speed, cracking your first against her jaw in an instant and sending her sprawling on the floor, "From now on you'll address me as master, you'll speak only when told to speak, and do everything I tell you to." she whimpers as she holds her bruising jaw. "Well?" you ask.

"Y-yes master." she looks down at the floor and tear falls from her face. The floor in which the tear lands brightens up and seems to sparkle. You will need to corrupt her even more before she falls from grace completely.