Good Monring Lynn,
I am so sorry about the death of your Aunt.
My husband's Grandmother had Alzheimer's Disease and did not know or remember her own daughter from day to day toward the end. That was my Mother-in-law, who went everyday and spent a lot of the day with her at the Nursing Home.
When My husband's Aunt, Grandmother's other daughter came down with cancer and died the family decided not to tell Grandma as every day if she would ask about her daughter it would be like hearing it for the first time and she would grieve every time. Grandma asked for her husband everyday and telling her he was gone always upset her. In the end she did not know anyone which was sad but we all continued to visit her and just sit with her and talk to her.
I remember going to visit her at Christmas time and my husband is her first born grandchild. It was sad to have her look at him and she would ask him, and just "Who are You?" He would tell her and she would just shake her head.
She loved the Christmas present...............the wrapping paper and the bow, it kept her hands busy. She had know idea what the present was but the bright colors of the paper made her happy.
Well that is how our family handled it but I know your family has to make the decision based on what you feel is best.
I will pray for you and may your God bless you.