That’s a tough one. I think sexual compatibility is extremely important in a relationship. I have a very high drive and if my man didn’t match mine, I don’t think we’d last. It caused a ton of issues with my ex husband because we didn’t match in that way.
Sex is a primal need. If her drive is very high, that urge won’t go away. I think that you both need to compromise some here or else things are going to fall apart. A high sex drive is more than just a casual desire. It’s like being hungry and never eating enough. Think about how you’d feel in that position and that should help you understand her point of view.
Maybe you should restrict her at times, because you are in control…but the bigger question is how long is she going to stay mentally engaged if she’s constantly frustrated? Compatibility is an important part of D/s, like any other relationship.