harmony,
The issue with minor children here in michigan is the same. The cps will get a court order for the transfusion. I know a fifteen year old who had to have a transfusion. Her parents went to court to fight the transfusion, but they lost (good). She is fine now, probably would have died without it though.
It seems that all JW's would be included in the law that you quoted for us. They are all legaly considered ministers in the U.S. (correct?) If this is the case, it seems they would all be exempt from the obligation to report child abuse and child sexual abuse cases to the proper authorities. It wouldn't matter if they were an elder or a ms or just a "friend". Although, knowledge outside of the elders is probably very limited. The society tries to keep a lid on child abuse cases.