Lady Zoey had to get this guy under her total control and she was not going to have it any other way. That is why hypnosis was her top priority. She had to make sure she got the guy to do what she wanted and that is why she chose to hypnotize him as it gave her a lot of power and control over him. It all went according to plan.
Lady Zoey learned how to hypnotize and she tried it on her ex. She did it for fun because she wanted to fuck him up a little bit. He thought they were having a routine meet up but it ended up being a hypnosis meeting and she gained control over him and she messed with him by inserting some nasty things in his mind for a few days then she hypnotized him again to remove them.