Why did Mystique die in Dark Phoenix?

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Tags

1. #jennifer
2. #because
3. #mystique
4. #revealed
5. #crying
6. #death
7. #phoenix
8. #turner
9. #forthcoming
10. #scene
11. #lawrence
12. #dialect
13. #coach
14. #reaction
15. #before
16. #installment
17. #emotional
18. #spoiler
19. #character