How did Lady Olenna die?

Related questions

1. Who killed Doran Martell?
2. How did baratheon die?
3. Who was Cersei's first husband?
4. Why did Olenna poison Joffrey?
5. Does Sansa marry Tyrion?
6. When did Olenna put the poison in Joffrey's Cup?
7. What happens to Sansa after Joffrey died?
8. What happened to Cersei's daughter?
9. How does Myrcella die in Game of Thrones?
10. What episode does Hodor die?

Tags

1. #poisoned
2. #referring
3. #joffrey
4. #everyone
5. #though
6. #about
7. #reminisced
8. #purple
9. #poison
10. #believe
11. #killed
12. #death
13. #after
14. #olenna
15. #someone
16. #doing
17. #painless
18. #wedding
19. #drank
20. #season
21. #sansa
22. #tyrion