Wait for Tomorrow — Denise Robins

Until the moment Charlotte discovered the letters hidden behind the broken mirror, nothing really extraordinary had ever happened to her. She was, she always throught, an attractive, secure , happy young girl with no doubts about her place in the world, no fear of the future. But the letters changed all that. Suddenly she was faced with a past she never knew existed. Her past. And like some strange, unwelcome shadow in the night, it threatened everything she held dear.