"Coming together" really is the best way to describe this--like that moment when you're making pie crust and the dough suddenly goes from being a crumbly mess to being a single mass. :-) Not that your story was doughy, or a crumbly mess.... you know what I mean!
Lynn's motivation is still a little mysterious, but not quite so baffling. Sarah's motivation is simple and relatable--good, exciting, D/s sex! S's challenge is clear but tricky--keep juggling these two girls. Ironically, the key to keeping their sexual services is to keep them satisfied.
Delightful story, and more interesting all the time. And totally hot! I can't wait to hear about Lynn's day at home--being locked at home in this exact situation is a fantasy of mine. :-)