What is the share of each heir from the deceased's inheritance, given that her heirs are: two daughters and a full sister?

If the heirs are two daughters and a full sister, then the two daughters receive two-thirds, and the sister receives the remainder. The inheritance is divided into three shares, one share for each of them. Inheritance matters must be referred to the Sharia courts for investigation, as there might be wills, debts, or other rights that take precedence over the rights of the heirs.