Sole nominee of deceased in-laws

My Wife's Mother & Father made some Fixed Deposits & PPF accounts on their name with My Minor Daughter as Sole Nominee & My Wife as Guardian on Behalf of Minor.

Now they were expired and these Fixed Deposits & PPF accounts got Matured. My Minor Daughter being Sole Nominee can get all this Money. If so, what is required?

My Wife has other Brothers & Sisters. Will they also get share in Fixed Deposits & PPF accounts for which My Minor Daugter is Sole Nominee...