Great-Aunt's Will

My aunt is very old. So she approached my family and wanted to leave her inheritance to us, on the condition that we provide for her in her old age. My family agreed. But after my aunt passed away, her grandson who ran away from home came back with her will to inherit the inheritance. Only then did we know that our aunt had written a will in front of us and left the inheritance to us. He immediately changed his will and left everything to his grandson. Just to coax us into taking care of her in her old age without paying a penny. My mother was so angry that she came to the house to argue. However, he was severely injured by his aunt's grandson and his men, and he could only be paralyzed in bed for the rest of his life. In order not to hinder my father and I, my mother ended her own life with a fruit knife. I was so sad that when I opened my eyes again, I was transported back to the day when my aunt came to write her will. This time, I got ahead of my parents and said, "Auntie, if you are really sincere, we might as well go to the notary office to notarize this will. What do you think?"