Carl, are you really saying there is no such thing in California as a fathers duty to their child and neglecting such a duty, to the point of failing to report their child has been raped, is not considered to be child neglect?
First off, in CA this is "unlawful sexual intercourse" and not "rape." Rape is defined here as an act committed through the use of force or fear, or coercion by position. An act that is otherwise consensual but unlawful solely as a result of age is not "rape." However, if there is a 3 year difference in their ages, it IS a felony criminal offense.
And, no, it would not necessarily be a crime for dad NOT to report it. It MIGHT be if this was an ongoing act and the child was being continuously exposed to the activity, but in the case of a parent learning about it later on, no, it is not a crime.
So, if I lived in California and somebody beats or kills my child and I am aware of the act and the actors, there is no legal action possible against me if I fail to report it?
You are talking about some very different actions from the issue at hand and the absurdity of this question does not deserve a reply.
I'm having my doubts here Carl. I defer to your knowledge of Cali law but failing to report a crime against ones child not being actionable by the state? It just doesn't sound right.
If you witness a crime - any crime - in your state, do you have an obligation to report it to the police? In most instances and in most states, you do NOT have a legal obligation to do so. While it might be the moral thing to do, there may be no legal obligation. Likewise, in CA. There is no legal requirement that a parent report this to the police ... in general. Specific circumstances might make it such that the parent is exposed to criminal culpability, but this does not appear to be the case here.
Let's extend this out a bit ... my wife and I are parents, and we are also mandated reporters. If there were a legal requirement that we report sexual activity of our own children, or, that we report it when their friends might come to us in our capacity as their friend's parent, we might as well hire counselors to speak to our kids and even their friends because they would never be able to open their mouths to us about anything. Such a law for mandated reporting would so directly interfere with our ability to speak to or parent our children, that we might as well be prohibited from conceiving or raising them at all.
In this instance, as I understand it, we have a father who has discovered - after the fact - that his minor daughter had sexual relations with an adult more than three years her senior. Yes, it is a felony. But, CA law does NOT require him to report this to the police. Is she in danger of further abuse by this guy? If so, then he may well get in trouble for failing to protect her. If he were encouraging, aiding, or abetting the activity, yes, he could be in trouble. But if he were required to go to the cops because she may have provided this information in confidence, then it would unduly interfere with his ability to parent his child. If the law required such a report for any and all criminal activity, parenting might as well be conducted by the state.
Now, what is legally required and what is morally required are different animals. Had it been a teenage daughter of mine, I would almost certainly have gone to the police with it. But, no law in CA would require me to do so. In fact, I strongly suspect that no law in any state would require a parent to report this under the circumstances as they have been outlined here.