I just finished the game and it is very well done for a prototype, i love the artstyle and design of the wife, I will just give some ideas.
1.- I think I agree with everyone that a danger meter should be added to warn you when the husband comes into the room.
2.- Maybe a customization system for the wife, maybe lingerie
3.- Maybe a system of days, where each day the room changes, something like day 1 kitchen, day 2 bathroom, day 3 garage
4.- Add a gallery to the game, but I see this more in the future.
But yes, for a prototype the game is very well done and the idea is very good.