If none of your grandfather, grandmother, nana and nani was alive at the time of your parents’ death, then only you and your sister are the heir of your late parents. Now the ruling is that after paying due rights preceding inheritance and provided the detail of heirs is correct, the property of the deceased parents shall be divided into three shares. You shall get two shares and your sister will get one share. The wife of late Khalid and his children shall not get any share in the inheritance of your deceased parents as per the Shariah. This ruling is for land, garden, jewelleries, cash and all other things that your deceased parents owned.
Son: 1×2 = 2
Daughter: 1×1 = 1
Total: 3 Shares
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband