Perhaps you mean that she has the right to say No and that he should respect that right. This is a human right to choose. Control is a different issue. If you want to control a situation, you need to use good judgment as well so that you don't put yourself in the wrong place at the wrong time and under bad circumstances.
Always be prudent, be mindful of who you are, who you are with and where you are. That is control. Using your brain is the power.
Do something stupid and you could lose that power.
Best wishes. Be safe.