Ms Pooja,
There are three possibilities.
1. Assuming that your father has succeded the property after the death of your grand father, the property would have to be shared equally by your father and your Aunts equally.
2. However in the event that you father has succeded to the property under a will of your grand father your aunts would not be entitled to a share.
3. In the event that the property in the hands of your father belonged to your great grandfather, and that your grand father died prior to comming inti force the 2004 amendment to the hindu Succession Act, you aunts would not have a share in the property as it would have vested in your father as a sole surviving co-parsenor. The last aspect is discussed in detail in a recent judgement of the Karnatak High Court.
Lastly the factum of her marriage or her divorce nr non divorce is of little or no consequence.
I hope the proposition of Law is clarified.