Enslave her

Duke had planned on getting himself a harem of hotties from the start. He figured he may as well waste no time and get Glynda fully on board.

"Ms Good-- no, Glynda. When I remove my finger from your head, you will wake from this trance. However, you will find that things have changed. From now on, your primary goal in life is to serve and obey me. You will follow my commands, you will always look out for my best interests, you will exist solely to be my slave. Otherwise you will be your normal self, and you will do what you need to in order to maintain some level of normalcy. But regarding of how much you may need to hide it, at the end of the day, you belong to me and only me, and my happiness is paramount in your mind" he commanded.