Challenging will

My grandfather has 5 children. 1 male (my father and 4 females. My father died 10 years ago. All my aunties are well settled . My grandfather need to save the property from going it out to another person from outside. So at the age of 70, he made a WILL that was 9 years ago , he divided every property equally including the property of my grandmother. They both made the WIL( both of their names were there). After making the WILL and registering it, he convinced 3 of my aunties to sell their property of land in my name , and i had to pay the amount 9 years ago from the money i got after the death of my father(govt servant). And one aunt told she doesnt need money, she needs only the land. Now after 9 years when my grandfather died , the will was read and one of the aunt who sold her properties to me is saying she will go to the court , the properties are not equally divided etc. The will is registered and made by my grandmother and grandfather equally including all the properties.They are telling nothing is left for my grandmother, so she is going to the court to get the rest of the properties. Is it right? Will there be any problem? 9 years ago the market price amount eas giving to all my aunts; it was worth 11 lakhs . Now the price is about 1 crore rupees. Will the amount i paid go to waste bin ? I am confused. Please reply