Agree with starting at the beginning, but if she is ignoring you, you are not putting enough pressure on her. Start with asking, then gradually escalate your pressure (with your whip or whatever) until she does what you want. As soon as she does, back off immediately. Next time it will take less pressure I would bet. But you have to step up and match her or she will continue to take advantage. And-remember-this may not be a one time lesson. She will most likely test you from time to time.