Sale of minor property (divorced son)

Hi sirs, My brother died due to blood cancer without having will etc. He got his mother 68 years old alive. He was divorced wife in 2014. One son living with his mother. Now we have got legal heir certificate for my mother and her grand son(50:50). My mother want to sell the property and pay the half share in the bank account in minor's name. After getting court order, does my mother legally allowed to do so? Thanks