We require more information

My father died about 11 yrs. ago. We did not divide his estate at that time. We thought it is supposed to be divided between his wife and daughters only (as he let a wife and two daughters) and we decided that we will divide them whenever needed (as both us sisters were married). Now we came to know that my father’s sisters and brothers also had the share in his estate. And we have definitely committed a big sin by not dividing his estate 11 yrs. back.

Now the condition is that at the time when my father died he left following people:

wife

2 daughters (both married)

1 brother (originally he had 2 brothers but 1 passed away before him)

3 sisters

But now 1 (remaining)brother and 1 sister also have died in all these years. And we don’t know how to divide the estate now?

a) What could we do with the share of passed away brother(s) and sister? Could their share now be given to their kids or be given to some charity or any other way?

b) How many shares would each person get (please clearly explain because of some living and some passed away heirs)?

2. My son of age 2 yrs. and 4 months by accident drank some breast milk out of the bottle my friend took out for her infant. It was anywhere from half ounce to one ounce. Now my question is does the relation of “razaaat” has formed between my son and my friend?