I Picked Up the Evil God in the Romance Novel and Now She Is Obsessed

I brought a child who had collapsed on the street, only to find out that she was the Evil God from the novel! If the Evil God fully regains her strength, the world is doomed for sure. So, I’ve decided to try and reform her in a good way. But then… “Oppa. I’ve paid off all the debts.” “Oppa. I’ve reclaimed the mansion for you.” “Oppa. I’ll protect you for the rest of my life.” …Did I make the right choice?