

Call from a burner phone and give an anonymous report. Even then, if you have the slightest connection with the victim, you will be questioned, and you should shut the fuck up.
Investigators are looking for someone to arrest, prosecutors are looking for someone to charge, and courts are looking for someone to convict. Whether that person is actually culpable is irrelevant.
You asked. I answered. Sorry if you didn’t like the answer. If you already knew what you wanted the answer to be, why did you ask?