No one really knows what makes one child disclose and another not. We do know that it is incredibly important for a disclosure to be heard respectfully and to be believed. They simply don't understand what is happening. Most likely, the child won't tell again. And regardless of when the incest stops, the effects on the survivor last for years.
Every child is vulnerable to sexual abuse.
Today's teenagers and children must face the possibility that someone may hurt or take advantage of them. Very young children, as well as older teenagers, are victimized. If you were ever sexually abused, even if it was years ago, it is okay to tell a trusted teacher, school nurse, guidance counselor or friend. Sexual abuse involves forcing, tricking, bribing, threatening, or pressuring a child into sexual awareness or activity. Sexual abuse occurs when an older or more knowledgeable child or an adult uses a child for sexual pleasure.