A Long, Long Sleep by Anna Sheehan

Having being woken up after sixty-two years with a kiss, Rosalinda Fitzroy has found that she has been forced to assimilate to a world that she has never seen, or even dreamed about. In the sixty-two years of being stabilized in a stasis tube, the world has seen itself through the Dark Times, which killed millions of people dead, including her loved ones. In the new world, she has found herself strangely interested in the boy who woke her, and in the world around her as she attempts to face her past while living in the future.