You make a great point. I have no idea... and I’d only be speculating on how or why a parent would do it.
Someone told me a story last year (and I’ve forgotten who), of being touched by a priest in an inappropriate way as a kid. He went home and told his dad. The dad and one or two of his brothers when to visit the priest and apparently roughed him up pretty good and warned him.
Of course, child abusers almost always go after fatherless kids. (They're evil, not stupid.)