GR translation: young lady gamming well-set-up young man

[Mike Jing]

P 35.30-37  What can he do? If Mexico wanted to talk about it he could
find a way, security or not. His reluctance is not Pirate’s own over
the machinery of Operation Black Wing. It looks more like shame.
Wasn’t Mexico’s face tonight, as he took the envelope, averted? eyes
boxing the corners of the room at top speed, a pornography customer’s
reflex . . . hmm. Knowing Bloat, perhaps that’s what it is, young lady
gamming well-set-up young man, several poses—more wholesome than
anything this war’s ever photographed . . . life, at least. . . .

What is "gamming"?  And what is a "well-set-up young man"?