Why did Vesper betray bond?

Related questions

1. Did Adele write Skyfall?
2. Is M killed in Skyfall?
3. Is James Bond married?
4. How did M die in James Bond?
5. Is skyfall a sequel to Quantum of Solace?
6. How many girls did James Bond sleep with?
7. Was Sean Connery supposed to be Skyfall?
8. Does the skyfall house exist?
9. Is Raoul Silva M's son?
10. What does Skyfall mean in James Bond?

Tags

1. #money
2. #chances
3. #chiffre
4. #boyfriend
5. #winning
6. #vesper
7. #exchange
8. #which
9. #would
10. #order
11. #retrieve
12. #account
13. #white
14. #because
15. #mission
16. #password
17. #organization
18. #blackmail
19. #spared
20. #kidnapped
21. #quantum
22. #steal