The characters are believable and perform their tasks as apocalyptic survivour's as you would expect. Penryn I love. I love her attitude, her gumption and her need to protect her family. Her mother, is also a well thought-out character too. And her story of mental illness ... well, is it really that?
Overall I throughly enjoyed the story, although I must add, it did take me four chapters to reach a point where I truly wanted to continue. But that's just my opinion.