Remember not to buy into the rather too common bit of snobbishness that says that Real DominatricesTM do not have 'sex' with clients. Some very lovely ones do, and some very lovely ones do not.
Without suggesting that Lady_Lust_XXX has ever done this, some of the less lovely ones have a very annoying habit of looking down their noses at anyone who does - regardless of whether or not they also include BDSM services. It's usually an laughable attempt to pretend that they are not prostitutes like everyone else offering sexual services for money. If anyone wants to put 'of course I do not have sex with clients' in their marketing, fine, just don't believe that it makes you better than anyone who does.
In this case, if the client wanted a no 'sex' pro-domme, he'd have booked one.