Spoilers:
I hope Gail is alive, too. I'm also hoping that she's not too badly hurt or at least, not critically, and that she's just passed out and will wake up soon. It's bad enough that Garret attacked her in a case of mistaken identity, even if you ignore the fact that Garret almost stabbed Dana earlier because he didn't recognize her in the dark. If Garret killed Gail, a fellow teammate and the only person in the group who knows the most about medical care, then, like you said, it's about to make the story ten times more complicated.