There are many understandable reasons why a child victim of sexual abuse is not likely to tell anyone about their abuse. The abusive adult often times convince the child that they won’t be believed or that they are somehow responsible for the abuse and will be punished for it.
The child may care about or feel protective of the person who sexually abused them and may feel they’d be betraying this person by telling about the sexual contact and the abuser may use this information to help maintain the secrecy.
These are the reasons why children often remain silent in order to protect a non-abusive parent from upsetting information.
A child may be confused, threatened, afraid, guilty, or may have been enticed with gifts and treaties.
Always remember that there are no situations where a child is responsible for any sexual interaction with a more powerful child or adult.