How to draft noc from legal heir for property mutation

First of all thanks for giving reply to my query .it is a registered will and it is clearly stated in the will that i will become the sole owner of the property after the death of my mother and it is also mentioned in the will that my sis has no any right to take part of her share in this property . moreover my sister wont challenge the will and we have a clear mutual understanding over it . probating will will cost me much because i have to make payment of applicable court fees depending upon the value of the asset. it would cost me really much . can we draft noc through a lawyer or any other way out to simplify things here .