Would a legal name change prevent inheritance if former name was in the will. The legal name change was also part of an adoption.

My father passed over 20 yrs ago was willed 1/3 of his aunts estate. The will stated in case of his passing his % should go to his heirs. At which point both mine and my half sister (same father) names were written. Post writing of the will my half sister was adopted by her mother's next husband and legally changed her name to reflect this. Fast forward 10 yrs later no contact with any of my family she has reappeared with her hand out. Her half would come to approximately 250,000 plus additional acreage of the family farm. Her birth name was stated in the will, and I believe had this occurred before the writing of the will my great aunt's feelings would have been different.