"All right, I'm not quite sure how I feel about that, but I'm willing to entertain the idea. You, who does not actually want any complications here, write a rental contract whose terms you're confident prevents the Queen from breaking Carissa or winning her affection away from me by being too much of a better sadist, even if I can't read that part until possibly much later. That handles sadism. I think my brain is willing to believe that Carissa having an orgasm I can't give her yet is not actually a problem for our relationship."
"This leaves the problem of how to not have Carissa be attracted to somebody who, maybe, looks even more than me like somebody who could take absolute-power over her. It leaves the question of whether I can win if we get into a fight over who owns her, which is itself very much a 'trope'. I have my own idea, but I'd be interested in hearing what, if anything, you would think of as the most obvious solution. No, not just going ahead and demanding legal ownership of Carissa from Cheliax, the second most obvious solution."