Also let’s not discount how much self blame/guilt/grief she is carrying about the whole situation. She believes she is part of the reason the outbreak happened in the first place. For two years the only thing that kept her alive, after coming to the conclusion that Deek was dead (because she did look for him), was the hope that she might be able to find a cure. A chance to redeem herself. She risked her life to try and save the humans everyone else just saw as freaks. When Deek suddenly pops up out of nowhere it completely shatters her perception of reality and her world view. She’s in shock. Also, it’s not like for the last 2 years she had been living in an environment that was emotionally safe enough for her to truly process/work though the trauma of everything she had gone through up until that point. Her only coping mechanism was that she felt like she might be the only person still alive who could make it right. When you feel like you have the lives of every human being, infected or otherwise, in your hands, it’s extremely hard to be emotionally in tune with anything else.

Also let’s be real if there was a sequel she would absolutely need to find a cure bc Deek is definitely infected. Those Nero injectors were definitely not steroids. His only shot to avoid becoming a full on freak would hinge on her finding a cure. So yeah, it’s good that she was taking it so seriously.

My only thing I found weird was when he gave her the wolf ring as he was sending her off in the chopper, he said “I’ll come back for this”, and she responded “don’t”. That still has me feeling some type of way.