1. your mother, your two sisters,yourself and if the mother of your father is alive She will also a legal hire. Moreover, if any adopted person/s,legally wedded second wife and the children will also be LEGAL HEIRS.
2. title deed,tax receipts of both landed property and building,death certificate of your father,legal heirship certificate/succession cetificate,measured plan of the property, ID cards, photographs,witnesses,valuation certificate,non attachment certificate,non-encumbrence certificate,boundaries of the property,passage clerence etc...
3. same as 2
4. in order to her ambition. She has only one equal share over the total property. she can gift/settle/release her share to you if she desires.