No. His wife has no rights to the inheritance.
Yes. If there is a will and the children are not included, they're not included. If, say, a husband/father dies without a will and wife remains, wife inherits all whether she is mother of husband's children or not.
added
she should just in case
The wife and kids.
The son of your father's new wife is your stepbrother. Her former husband is not related to you
The judge is the criminal's father.
A person's father-in-law is the father of their wife or husband.
mother/father in law
Your father-in-law is your spouse's father, i.e. your wife/husband's father.
Nice. You have to define the order of death, even by seconds, either by physical evidence or by assuming from the circumstances. First the spouse inherits, then their kids. e.g.;Car crash, man dies half an hour before, woman takes the money, then woman dies , her kids get the money. Man s kids get nothing, or less. It was a big issue when Kennedy Jr was killed... Cool, no?
The estate has the responsibility. And the assumption is that the wife inherits at least half, if not all, of the husband's assets. But the estate has to liquidate all assets before they can transfer them to the spouse. One way or another, the spouse really ends up paying the debt. If there is more debt then assets, the debt will normally be closed out.
A husband's stepfather is a step-father-in-law to your wife, but, if your wife is comfortable she can still call him dad and if not, she can call him by his first name.