In my opinion, it seems they have much less passion for each other than they have in the past just like any other couple would normally have. Occasionally they have good sex but it seems only when they are drunk and/or feeling happy with their present situation. I'd be willing to bet they had plenty of sex on their vacation because they would have been much more relaxed. Kitty likely gets frustrated because Smith puts very little effort into sex and possibly less into their relationship. Plus, Smith doesn't seem to be very interested in working a regular job. I am quite sure they do not want to stay in the apartment forever, however their tour of duty may be lasting longer than they anticipated and now they may be in a rut. From what I have heard from others, Kitty models. But judging from the amount of time she spends at home I would guess she doesn't get many calls. I've also heard she looks fantastic when she is made up for a job. She gets angry, yes, and it usually over the top. But any man who has been married will tell you that if he did not work steadily and move forward in life plus show love and some amount of passion to his woman, that behavior is to be expected. And just because he does not fight back only shows that he is either tired of fighting or he knows she is right, or both. Down deep I believe they do care for each other, but the relationship is not moving forward at this point and both may be afraid to do something about it or they are truly in love.
As far as bating. I would guess that session two days ago was almost certainly meant for her fans. It would be nice to think that somebody pushed the right buttons. 🙂