As I’ve reported here before, I’ve been catching up (backwards, slowly) on Game of Thrones, and Ms. Rigg was wonderful in that show.
The picture is from a GoT scene which I have watched many times, and it shows a very specific moment in that scene. Lady Olenna has an empty wine glass in front of her, along with a very small bottle and a very small stopper. That says that she has just drunk poison — knowingly and, under the circumstances, willingly — but she’s not going to go quietly.
(Featuring Dame Diana Rigg as Lady Olenna Tyrell and Nikolaj Coster-Waldau as Ser Jamie Lannister. Background: All those guys marching at the beginning of the clip are the Lannister army. They have just conquered Highgarden, the seat of the Tyrell family, on behalf of Queen Cersei Lannister, who is Jaime’s sister and lover.)