After being told by Skyler that she is alone, Walt berates her, accusing her of never supporting his criminal activities and having worked by himself in building up the wealth for their family, and threatens Skyler's life should she divulge his doings to anyone else.
Walt berates her, accusing her of never supporting his criminal activities and having worked by himself in building up the wealth for their family, and threatens Skyler's life should she divulge his doings to anyone else. She is alone. This was what Walt was being told by Skyler.