What happened to Owen Hunt's sister?

Related questions

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2. Was Amelia pregnant in Season 13?
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4. Does Alex Karev marry Jo?
5. Does Owen Hunt adopt a child?
6. Do Cristina and Owen have a baby?
7. Does Meredith date Riggs?
8. Does Christina have an abortion?
9. Do Cristina and Owen break up?
10. Does Amelia Shepherd have a baby?

Tags

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19. #caused
20. #brother
21. #medic
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25. #crash
26. #helicopter