What is ancestral property ?
Property inherited upto 4 generations of male lineage (i.e., father, grand father, etc.) is called as ancestral property. The right to a share in such a property accrues by birth itself, unlike other forms of inheritance, where inheritance opens only on the death of the owner. The rights in ancestral property are determined per stripes and not per capita. This means that the share of each generation is first determined and the successive generations in turn sub divide what has been inherited by their respective predecessor.Properties inherited from mother, grandmother, uncle and even brother is not ancestral property. Property inherited by will and gift are not ancestral properties. Self acquired property on the other hand can become ancestral property only if it is thrown into the pool of ancestral properties and enjoyed in common.
Is the property of Paternal or maternal great Grand father ?
If it is the property of Paternal great Grand father, the property not comes under ancestral property. You and your siblings and your mother can got right in the property as your father have in that property. If you want to partition the property then file a partition suit for getting your share.
If the property is comes under maternal great grand father, grand daughter has no right in the maternal grandfather's property even if the grandfather died intestate.If your mother is not alive then you can claim on her share.