Tell Me Where You Are — Moira Forsyth

Maybe the worst thing hadn't happened yet. You couldn't know the awful things lined up in the future, looming.The last thing Frances wants is a phone call from Alec, the husband who left her for her sister thirteen years ago. But Susan has disappeared, abandoning Alec and her daughter Kate, a surly teenager with an explosive secret. Reluctantly, Frances is drawn into her sister's turbulent life.