Gift deed or release share of property

inder (Dir) (28 Points)

25 July 2015  
My wife just lost her father and she co-owns a house where she and her mother are co-owners at 50% share.
 
My wife's mother wishes to transfer her share to my wife immediately.
 
May I request you for your valuable advice as how to proceed and avoid any taxes in the transfer etc ?
 
Should the mother Gift it or Release her share...please advise.
 
I shall be extremely grateful.
 
Regards
Inder