بسم الله الرحمن الرحيم
In the above mentioned case all the property of Saleema shall be divided into two shares and each son shall get 1-1 share. Since Saleema’s daughter Fatimah died while her mother was alive, hence Fatima’s children shall get nothing in the property of their grandmother’s property.
Allah knows Best!
Darul Uloom Deoband
This answer was collected from the official ifta website of Darul Uloom Deoband in India.