As Christopher Buckley wrote in his memoir, Losing Mum and Pup, when the last of your parents dies, you are an orphan. This is poignantly true if that parent is your mother.
“You lose the true keeper of your memories, your triumphs, your losses. Your mother is a scrapbook for all your enthusiasms. She is the one who validates and the one who shames, and when she’s gone, you are alone in a terrible way.” ..