she worships ONLY her Masters cock, and no other.
However, if You wish to fuck her mouth, to use it as You would her cunt - You may do so.
Or perhaps You would want her cunt, her asshole - or all three.... the choice is Yours and Yours alone.
You are expected to leave her unmarked and healthy in every way.......but well used.
Limits
Animals - Children - Watersports and scat - Humiliation - drugged/necrophillia scenes - the use of a single tail or cane
Please, as a matter of courtesy, contact her Master when You have used her, with any comments You wish to make, via His soi mailroom..... He is......The Dark Lord