Logical Fallacies
Some of my favorite mind control stories involve girls being made susceptible to outlandish premises and made to believe ridiculous things. Logical fallacies are often can be a great starting point for this kind of story. Maybe there is a device that forces a girl to find a slippery slope from point A to some sexy point Z. Maybe instead she must choose between any two options presented to her. Or she finds herself believing her acquaintance is her friend with benefits because she can't prove...
Mind Control