When a solar eclipse sends a colossal blast of super chilled air towards the earth, it then sets off a catastrophic chain of events that threatens to engulf the world in ice and begin a new Ice Age.
I'm 95% that the actress who plays Zoe is not diabetic.
Early on, Zoe asks for a chocolate bar. This is implied to be related to her diabetes, which would mean she's concerned about her blood sugar being too *low*. Later on, she goes looking for insulin- which treats *high* blood sugar. Considering there's no indication that she ever got the simple sugars she was looking for, I have a hard time believing that she's suddenly hyperglycemic.
later, they pretend to administer insulin via pen but don't bother to attach a pen needle.
If the actress were diabetic, she would have immediately noticed these errors and brought them up. My 5% doubt is in case she did bring it up and it was dismissed as being a hassle to change.