Gift of immovable property

Dear friends & Ld. Seniors, I have a question for which I need your guidance. The question is as follows :- A mother wants to gift a property to her eldest son, she has 2 sons and a daughter who have no objection . The immovable property actually belongs to her late mother in law who had 5 sons and 4 daughters of which 1 sons and 2 daughters are dead. The property were mutually divided between 5 brothers after obtaining no objection from sisters. Now the mother in question has the property on the basis of her dead husband. What should she do for gifting the said share to her son and can the gift deed be registered in this case under Transfer of Property Act. Yours, S.K.Gupta, Advocate