At this point, I know I'm nit picking a bit here because Walt has become one scary dude. But what I'm saying is that I needed a scene in the season opener where Walt actually does something that makes Skylar think that he just might harm her if he feels the need. She seemed to be frightened of him in their first scene together.
Carmella Soprano knew Tony was a scary dude too. She knew he was capable of murder and worse, but she was "reasonably" sure he wouldn't harm her for the most part. Being a "dangerous" guy in and of itself isn't necessarily a reason for a loved one to fear that person.
I just haven't seen where Vince has let us see whatever it was Skylar saw that made her feel about Walt the way she was shown to feel about him in the season opener. I mean we know Walt is scary because we've seen what he is capable of, but Skylar hasn't seen any of this. All we have been shown her seeing is Walt being a loving Dad, a loving (sometimes overbearingly so, and manipulative) husband.
I can accept that she is afraid of him now, I just think it would hav made more sense to show us something in the season opener that would explain her fear of him in that first scene in their bedroom in the season opener.
It would seem like she is a smart woman, & being so, she's been able to piece it all together. I think the worm really turned for her when he gave her the "I'm the one who knocks" speech
That speech was almost entirely for her character's benefit, because it was, at that time, still somewhat bullshit that Walt was spouting out of his ass for dramatic effect
It worked, & then coming out on top of the chicken man in bloody brutal fashion was the kicker. His whole attitude has changed, & everyone has noticed it
Even Jesse looked concerned at the end of last week's talk about Victor. Certainly the wife would pick up the clues much sooner & in her case be much more worried about it