MM I think you can actually consider the evening a very good cue-filled environment for your brain while on Nal.
Extinction is a process that requires more than just time and exposure to alcohol. It requires extinguishing, individually, all the environmental cues that signal to your brain that it's time to drink (or keep drinking.)
TSM is a simple process for lab rats. But thank goodness you're not stuck in a box with a choice of two levers to push. You're a human in a complex physical and social environment. If your husband's absence is a cue to drink, then sneaking drinks in his absence while on Nal is going to start the extinction process in that context. That's a good thing. It sounds like that's one of your powerful cues. (I see people often call them "triggers" but I'll stick with the term cues because that's more inclusive of all the wide variety of stimuli that signal our brains to choose a behavior, everything from red light/brake to screaming spouse/drink.)
When I have a horse that's afraid to load into a trailer, I will train him to load in a safe familiar place. When he's not afraid to load there, I'm far from done. I have to move farther from his safe place, down to the end of the driveway, and repeat the process. Then down to the end of the road and repeat it. Then repeat it at a different barn. By this time, his brain is beginning to generalize that the trailer is a safe place, BUT, if I want to be sure he's rock solid, so I know I can load to evacuate for a forest fire, then I have to go further and load him in the dark. Load him in a thunderstorm. Load him in every possible environmental context I can do it, because when the sh*t hits the fan, on the side of an interstate highway in an emergency, his fear is going to be recovered very easily. I need to extinguish his fear in all sorts of contexts.
Hiding and guilt aren't just emotions, they are environmental cues for your brain. Subtle facial expressions in other people may cause a cascade of emotions, cues, and then behavior that was previously reinforced by alcohol. Now you are experiencing the same cascade of cues, doing the learned behavior, but not it's being reinforced in your brain on Nal. So it begins to extinguish in that context.
So good for you. Consider yourself in training.
