Best files to make my slave more obedient and dumbed down?

[osles]

Hey so I just got a new slave and she's wanting to be more submissive and dumb but she's having trouble kicking her upbringing. I brought up hypnosis and she was super down to try it. But I'm brand new to this site and don't know the best files to try. I can't afford to pay for any right now lol so what are the best ones to download for her?