Coventina begins with the basic concepts, from the often unintuitive symmetry in even the most extreme or weirdest desires, between giving and receiving, a reciprocity that cannot be forced or faked, to the minutia of negotiation and safewords and best practices as understood by typical earths, and Coventina's own opinions on where those fall short or go too far.
She does her best to go breadth-first and not drill down into anything specific, lest they spent all night in the bath, and focus on the why rather than on the what. This is about giving Laurent the context to understand Coventina's cultural references, not teaching him to blend in at an earthly BDSM dungeon, and she holds to that firmly as she formulates her explanations.
She uses Sky in several hypothetical and not-so-hypothetical examples. "She doesn't want to put on a collar and be our cherished sex slave for a few hours and then take it off to go back to being just our valued party member the rest of the time, my read on her is that she wants to be our valued party-member-but-with-sex-slave-ish-boundaries all the time, and so the whole 'scene' concept doesn't really apply in her case and a lot of the," vague hand gesture, "narrative paraphernalia that can go into scenes doesn't work."
Coventina is pretty sure she isn't leaving anything out, but its a lot to condense, and also to condense in such a specific, tailored way. If she's doing it right, Laurent won't know a lot in concrete terms but he'll have a vastly better idea of what he doesn't know.