Amount gifted

I  HAVE DEPOSITED   MY MOTHER’S  MONEY  IN MY WIFE ‘S NAME  ( wife as first depositor)  IN  E OR S (mother as second applicant)  MODE IN  BANKS AND COMPANY DEPOSIT   MATURES  IN  FUTURE  .  NOW MY  MOTHER NEEDS THAT  MONEY.WE ARE GOING TO  ABROAD .    HOW CAN  I HAND OVER MONEY IN LEGAL WAY  TO MY  MOTHERS NAME .  IS IT  POSSIBLE OF GETTING   POWER ATTORNEY   FROM  NOTARY PUBLIC  IS ENOUGH . IF YES    HOW LONG THE   POA   VALID ?  . IF ANY OTHER LEGAL PROCESS PLS EXPLAIN

THANKING YOU