The domination icreases in gradual way, I like your system, it's credible.. I would suggest  other little tips.. 

In pussy worship (or ass worship, it's time?) category.  When husband lick, Zoe call mysterious friend and talk about him. He tells her it was really hot advice, joking about her husband.

In cuckold scene, when husband are unlocked, I advise you to reintroduce cuckold porn in computer . When Zoe finds out she gets very angry and as punishment she calls Jeff and fucks with him by ordering her husband to watch and jerk off.  If he likes it on video, he likes it in reality..

Thanks for your exciting game..