You and your sister have already arrived at agreement and partitioned the property. Now both of you should get drafted a family settlement by an advocate in which you should record the factum of already arrived agreement of partition of the property and get it registered with the Sub-Registrar in whose jurisdiction the property falls. This will help you in following manner:
1. You will save the stamp duty charges as recording of family settlement do not require stamp duty.
2. You will save court fee and lawyers fee by not approaching the court for partition.
3. You will save time. Registered Family Settlement shall give both of you legal title to the property.