Mistress, I humbly suggest to your transsexual friend that is danger no matter what sex the Dominatrix is.

In my experiences with dominant women my key kink is roleplay and being a submissive or captured "pet" for a Dominatrix with as much worship as the Mistress allows. Such is the nature of my kink is that I've seen ladies in disciplines anywhere from strict dominas who hardly let a sub touch them to escorts or masseuses who were dominant, professional but engaged in some vanilla activities. I'm kind of proud to say I either adhered to all the guidelines a true Dominatrix set prior to a session, or knew intuitively that the chemistry between the Mistress and myself may have crossed a line. I've always let the Domina make the first move, if she did at all.

My advice to your friend is to explain on her website and in person the strict rules of engagement. No illegal activities, not an escort, etc. or else the session will be terminated. No refunds. Even a horn dog can understand that.