Personal quirk, but LOVE the detial about the dominant wife forcing the older woman to leave barefoot ... younger woman keeping her shoes? Maybe mother in law on next visit will be horrified to see her shoes displayed as trophies in a glass case?
I know this one very very well!
Its by a wrestling site called Double Trouble, that used a lot of the classic bondage/fetish models - in this case Gina Carrera (AKA Julie) and Tori Sinclair (AKA Lisa)...
A little dog licking their poor feet while they have to stay quiet? You are such a good writer and such an evil person! It really is an amazing story so far though!
IF not out of line to say ...
... great feet and a cute face - you have a keeper there! If not too nosy, what size shoe does she wear and of course, are they ticklish?