I just finished Tristian's Gap by Nancy Rue a couple of days ago. It was an emotional read if you are a mom with preteen to teenage children. Tristian is a 16 year old missing girl from a good family. The book is mainly written from the point of view of Tristian's mother and the struggle she goes through in the search for her daughter. I found the book a bit slow in the beginning but it didn't take me long to get into it. I have enjoyed other books by Nancy Rue better. Here is a link to her website if you would like to further check out this or any of her other books.
Nancy Rue's Website