Not that he would need to worry about drugging her at that point in time, not with the look that she still had in her eyes. That submissive look that any well trained pet would have. Although give it a few more hours and she would probably be back to fighting him - so perhaps best for him to work on training her while it was still in her system. Teach her body the commands to follow, how to act when he said certain things, stuff like that.