The deceased father's property will pass upon the surviving legal heirs which includes all the sons and daughters (irrespective whether married or widowed) and the surviving wife. This is in case the father died without any will.
Incase he executed a will, his property will devolve upon the beneficiary in accordance with the will, post his death.
Incase there's no will executed by the father, her claim can't be denied by the brothers.
Just in case, in which year did the the father died?