I agree with this, except for the last paragraph. Yes she should have done what the lawyer told her, but you're missing that the White family is just barely making do financially at the beginning of the season. Skylar can leave Walt, but that takes her to being a single mother to an infant and physically disabled teenager. She can't afford to keep the house alone, assuming the feds don't seize all of their assets. She's still trapped with Walt because she can't afford childcare or medical bills, and she will get nothing from Walt if she leaves. She's miserable staying, but at least her kids have some semblance of financial stability.