After Jackson brings her to a sequestered spot for a romantic camping trip, Maggie hurts her ankle and also ends up with some kind of bug bite, only to be called up by Alex for a surgery ASAP. Just when the couple is about to leave, the rain starts pouring down.
It would be cruel of the writers to kill off Maggie since Meredith has already lost a sister. Plus, she's only started to get her footing with Jackson in this relationship. I don't necessarily think that Maggie will die, but a potential allergic reaction or car accident in the rain doesn't seem out of the question at this point. Jackson might not be totally safe, but things definitely don't look as good for Maggie, who is already mildly maimed.