looking for a provider that can deliver a merciless session like those depicted on handdomination dot com.

I'm guessing that you're looking for tease and denial and CBT, from what little bit I looked at on the site.  

That being said.... I've said it before and I'll say it again, Diana love is very skilled at T&D and dominant style experiences and many other variations of play.  

nycad
 

Yes it seems like what you really want is CBT and tease and denial. What you might be better off exploring is a dominatrix/mistress session. communicate if you want a "release" or not. If you want to make things extra interesting you can mix it in with a roleplay boss/employee, teacher/student, job applicant/interviewer, patient/sex therapist that kind of thing any situation where one person clearly has dominance over the other. If this really turns you on and you've seen someone a few times you feel comfortable with and can trust, you can try a kidnapping/abduction scene where you are blindfolded the whole time. For even more fun have her bring along a second person and have them "abandon" you in the room when they are done.

I will be in NYc for a day and besides being a GfE provider I do cater to certain fetishes.