Does anyone inherit along with my father from his deceased wife, with whom he had no children, and who has full siblings and a half-sister from her mother's side?

The husband inherits half due to the absence of a lineal descendant. The sister from the mother's side inherits one-sixth, and the remainder is returned to her. It is important to note that inheritance issues are complex and delicate and must be referred to Sharia courts for investigation or discussed directly with scholars, as there might be wills or debts that take precedence over the heirs' rights.