"The Skin Game" features a pretty creative TG scenario, and spends a fair amount of time in its protagonist's head(s) examining a believable submissive perspective. Unfinished, alas, but what's there is still an amazing tale, on par with "Lighter Chains" (and that's saying something).
SuspensionOfDisbelief, precisely the scene you're describing occurred in the last 8 pages of Vol 3. It's specifically referenced on page 20 of Vol 4 as one of the reasons the protagonist isn't putting up so much of a fight anymore.
(Also, while I'm commenting, bravo and thanks to the author for sharing this amazing work! :-) )