Property queries

My Father-in-law purchased a piece of land at Coimbatore Tamilnadu in 1975. Half of the price of land was paid by my Father -in-laws brother also and they constructed house by paying equally between themselves. However the land and building was registered in the name of my Father-in-Law. My wife is the only daughter of my Father-in-law with no other brothers /sisters. My Father-in-law expired in 2009. We moved to Delhi in 2010. Now my wife wants to gift the entire property including her share to her cousin sister. However, she is suffering from Cancer and could not go to Coimbatore due to her medical treatment. Can we get a gift deed registered from Delhi for the property situated in Coimbatore.