What puzzled me...
Well, there was more than one thing.
*Spoilers******
First, the girls seemed to have this wonderful book that explained everything from plant identification to how to do an abortion. But they were still hunting and gathering instead of planting a garden? Did the book not include gardening advice? They should have been *thrilled* to find those pumpkin seeds instead of having another whiny moment over it. Also, a book that great might have described how to make or grow your own fuel, or how to make a primitive battery to play music?? Or how to fix a roof and clean up the mold instead of burning down the house? WTF??
Also, if you were living that isolated from other people, wouldn't you set up some form of communication via the boyfriend that went back into the world? Didn't they have any neighbors in the woods or in town that they had any connection with and could share supplies and information with, or go live with?
And one more damn thing, also: after a couple of encounters with men sending rape hints their way in the early days of the power collapse, and being two females living on their own, did they not think to set up an alarm system? I'd be digging a damn moat and setting up punji sticks to keep out the ferals, in between using drum signals to say hi to the non-feral neighbors and using that nice beautiful fertile forest soil to plant everything I could get my hands on. But these two were just so overwhelmingly PASSIVE!
Also, the rape scene was disgustingly graphic - most of it could have been omitted and we would have still gotten the idea. But thanks for providing a cheap thrill to the men with rapist tendencies watching the movie!
Oh, sorry. One more damn thing. If you are forced to eat the dog food, couldn't you at least try to cook it first or make it into little pills and swallow it? Gross. But maybe that wasn't in the book, either. :P