forcing her to beg for her life and become his subordinate, which means she can't even think of harming him and has to follow his orders. He then gives her one of the abilities he can't use, which is something along the lines of monsterfication or beautification that turns into a monster, and this especially sweet because she basically slept around with men of power in the church in order to gain power and influence herself and then if one of them caught her sleeping with her next target she would claim that they were stalking her and trying to force themselves on her causing them to be in danger of losing their positions. So anyway the last thing the MC does to get his revenge on her is he told her to go and kill all remaining monsters and subordinates of the demon king's army, and as I said earlier she can't disobey him, but due to her being a priestess she doesn't have high attack power so she can't just sweep through them easily though she also won't die that due to having high regeneration due to the skill he gave her.