Because there were certain elements of the performance that Alan Rickman would have to change based on Snape’s true allegiance, JK Rowling told him about Snape’s history, and his love for Lily Potter (nee Evans), before he even accepted the role.
The Resurrection Stone, one-third of the Deathly Hallows and the one Harry would have chosen for himself, was used one time in the books — when Harry used to to summon his parents, Lupin, and Sirius as he walked into the forest to die at Voldemort’s hand. He would drop the Stone once he reached his destination, but what happened to this incredibly powerful magic artifact?
Well, JK Rowling again filled us in after the book was published, saying enough Centaur hooves have trampled it that its buried deep in the forest ground, never to be used again.
In a book series that features around a wizard so evil his many murders caused him to physically look like a snake, it’s really something for another character to be its most hatable. And yet, Dolores Umbridge, who gaslit and abused Harry and his fellow pals throughout Order of the Phoenix, managed to pull it off.
Thankfully, JK Rowling said that she would later go to Azkaban for her crimes. I wonder if Harry ever visited?