Reading this, my gut reaction says he is interested in her as a sort of "lab rat". Even if he gives away his services (especially if he does!), I wouldn't go through with it...at least not with him.
I'd suspect he's pushing in order to compile a history on her for a research paper or such.
That's what I think, too. We have run into that, and opted out-- because if for no other reason, DD isn't likely to be cooperative if SHE catches a whiff of it, and she's much more likely to clue in than any other person I know, being Deanna Troi herself.
She had a teacher once who was primarily interested in her as a "thesis subject." Yeah, I get that you're interested, and I get that she's a novelty, but--
no.
