There are just somethings in life that are hard to explain why they happened, or even why we do them. The best thing to do is to just hope it plays out in your favor. If not, then try to figure out a way. Clementine and Luke learn that the hard way.
When someone is lost, they can't come back. Unless they were never lost to begin with. Kim's death was a shock to everyone, even to herself. While her friends cope with her death, she tries to piece her life back together. Sure, going out and yelling to the Cyberworld that she's okay is an answer to her pain, but it's either she stays hidden or she dies. Book #4 of The Hidden Saga.