property for granddaughter

Hi, Could someone clarify my doubt regarding property. Im married women,with two years daughter ,i have been married for three yrs.my husband expired 3months.my father in law has three daughters who are married and one physically handicapped daughter.my husband is only son who is no more.my in laws are both pensioners and have three houses which are there self earned.can my daughter get share in the property since she is the only child of there son.now they are refusing to give us anything from there property.how much can my daughtr and myself get legally.please advice how shall i proceed.im an unemployed women.