Fumigantlocology Compendium
Also it comes back in reaction to sam's otherwise non-sexual compliment. a lot of will's bondage and degradation kink counts, as it emphasizes base bodily functions, but especially relevant is his apparent exhibitionist fantasies!
Sister, Lover, Servant, Slave
More to the point, she had certain _needs_ by now, and it was getting hard to have them met during 'days off', when there was no training with her mother to take the edge off - or even days when most of that training was for non-sexual pursuits, be it martial