Miss. Code Ann. § 91-1-7: Descent of property as between husband and wife.

If a husband die intestate and do not leave children or descendants of children, his widow shall be entitled to his entire estate, real and personal, in fee simple, after payment of his debts; but where the deceased husband shall leave a child or children by that or a former marriage, or descendants of such child or children, his widow shall have a child’s part of his estate, in either case in fee simple. If a married woman die owning any real or personal estate not disposed of, it shall descend to her husband and her children or their descendants if she have any surviving her, either by a former husband or by the surviving husband, in equal parts, according to the rules of descent. If she have children and there also be descendants of other children who have died before the mother, the descendants shall inherit the share to which the parent would have been entitled if living, as coheirs with the surviving children. If she have no children or descendants of them, then the husband shall inherit all of her property.