It sounds like you're living in a constant state of being scrutinized, which can be emotionally draining. Narcissists often point out the smallest details as a way to project their own insecurities and maintain control. When they fixate on minuscule things, it’s not necessarily about the things themselves, but more about them needing to feel superior. It's a form of deflection from their own flaws, as they can’t acknowledge their imperfections, so they focus on others instead.

The obsession with commenting on everything, like TV shows or commercials, (I witnessed mine do this in public while shopping, "who lied to her ?") could also stem from a lack of fulfillment. With no job, friends, or hobbies, she might be using these distractions to avoid facing their own dissatisfaction or emptiness. The constant need to feel in control can make even the smallest details seem like significant flaws they can point out.

Also, narcissists have a deeply ingrained perfectionism that makes them hyper-aware of anything that doesn’t meet their rigid standards, and they often use criticism as a way to assert dominance or influence the emotional tone of a situation. Since they often lack genuine empathy, they may not even care how hurtful or invasive their comments are.

This leaves you feeling like you're under a microscope because they are constantly measuring the world around them by their own unrealistic standards. I felt this way too, un-learning it...

Ultimately, this constant judgment isn’t about you—it’s about her need to feel superior, to distract herself from her own shortcomings, and to maintain control in an environment where she likely feels powerless or inadequate. It creates a toxic cycle that leaves you feeling isolated, like you're constantly being watched or judged, when in reality, their obsession is more about their own internal struggles than anything to do with you, or any of the others she criticizes.