She used to be the most popular girl in school.
Of course, she was smart, pretty, funny… But she could almost be mean. She kept refusing to help you out with your homework. She kept making fun of you in your back.
That made you made, didn’t it?
And that’s when you found that spell. Some sort of IQ regression spell. After using it, she was so dumb she would have done anything, for no precise reason.
She simply obeyed you.
“Let me touch your boobs”. She could only stare at you blankly. You’re not even sure she understands English anymore…